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annotate libgsmefr/basicop2.c @ 408:8847c1740e78

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libtwamr: integrate VAD1
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 07 May 2024 00:56:10 +0000
parents 38326102fc43
children
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
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1 /*___________________________________________________________________________
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2 | |
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3 | Basic arithmetic operators. |
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4 |___________________________________________________________________________|
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5 */
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6
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7 /*___________________________________________________________________________
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8 | |
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9 | Include-Files |
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10 |___________________________________________________________________________|
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11 */
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12
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13 #include <stdint.h>
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14 #include "typedef.h"
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15 #include "namespace.h"
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16 #include "basic_op.h"
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17
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18 #if (WMOPS)
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19 #include "count.h"
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20 extern BASIC_OP counter;
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21 #endif
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22
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23 /*___________________________________________________________________________
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24 | |
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25 | Functions |
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26 |___________________________________________________________________________|
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27 */
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28
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29 /*___________________________________________________________________________
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30 | |
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31 | Function Name : saturate |
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32 | |
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33 | Purpose : |
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34 | |
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35 | Limit the 32 bit input to the range of a 16 bit word. |
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36 | |
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37 | Inputs : |
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38 | |
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39 | L_var1 |
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40 | 32 bit long signed integer (Word32) whose value falls in the |
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41 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
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42 | |
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43 | Outputs : |
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44 | |
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45 | none |
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46 | |
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47 | Return Value : |
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48 | |
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49 | var_out |
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50 | 16 bit short signed integer (Word16) whose value falls in the |
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51 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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52 |___________________________________________________________________________|
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53 */
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54
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55 static inline Word16
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56 saturate (Word32 L_var1)
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57 {
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58 Word16 var_out;
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59
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60 if (L_var1 > 0X00007fffL)
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61 {
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62 Overflow = 1;
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63 var_out = MAX_16;
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64 }
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65 else if (L_var1 < (Word32) 0xffff8000L)
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66 {
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67 Overflow = 1;
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68 var_out = MIN_16;
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69 }
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70 else
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71 {
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72 Overflow = 0;
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73 var_out = extract_l (L_var1);
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74 #if (WMOPS)
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75 counter.extract_l--;
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76 #endif
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77 }
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78
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79 return (var_out);
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80 }
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81
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82 /*___________________________________________________________________________
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83 | |
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84 | Function Name : add |
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85 | |
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86 | Purpose : |
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87 | |
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88 | Performs the addition (var1+var2) with overflow control and saturation;|
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89 | the 16 bit result is set at +32767 when overflow occurs or at -32768 |
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90 | when underflow occurs. |
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91 | |
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92 | Complexity weight : 1 |
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93 | |
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94 | Inputs : |
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95 | |
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96 | var1 |
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97 | 16 bit short signed integer (Word16) whose value falls in the |
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98 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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99 | |
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100 | var2 |
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101 | 16 bit short signed integer (Word16) whose value falls in the |
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102 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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103 | |
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104 | Outputs : |
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105 | |
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106 | none |
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107 | |
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108 | Return Value : |
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109 | |
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110 | var_out |
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111 | 16 bit short signed integer (Word16) whose value falls in the |
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112 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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113 |___________________________________________________________________________|
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114 */
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115
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116 Word16 add (Word16 var1, Word16 var2)
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117 {
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118 Word16 var_out;
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119 Word32 L_sum;
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120
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121 L_sum = (Word32) var1 + var2;
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122 var_out = saturate (L_sum);
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123 #if (WMOPS)
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124 counter.add++;
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125 #endif
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126 return (var_out);
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127 }
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128
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129 /*___________________________________________________________________________
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130 | |
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131 | Function Name : sub |
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132 | |
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133 | Purpose : |
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134 | |
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135 | Performs the subtraction (var1+var2) with overflow control and satu- |
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136 | ration; the 16 bit result is set at +32767 when overflow occurs or at |
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137 | -32768 when underflow occurs. |
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138 | |
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139 | Complexity weight : 1 |
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140 | |
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141 | Inputs : |
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142 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 Word16 sub (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 Word32 L_diff;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 L_diff = (Word32) var1 - var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 var_out = saturate (L_diff);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 counter.sub++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 | Function Name : abs_s |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 | Absolute value of var1; abs_s(-32768) = 32767. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 | range : 0x0000 0000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 Word16 abs_s (Word16 var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 if (var1 == (Word16) 0X8000)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 var_out = MAX_16;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 if (var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 var_out = -var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 var_out = var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 counter.abs_s++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 | Function Name : shl |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 | Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 | the var2 LSB of the result. If var2 is negative, arithmetically shift |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 | var1 right by -var2 with sign extension. Saturate the result in case of |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 | underflows or overflows. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 Word16 shl (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 Word32 result;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 if (var2 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 var_out = shr (var1, -var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273 counter.shr--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 result = (Word32) var1 *((Word32) 1 << var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 if ((var2 > 15 && var1 != 0) || (result != (Word32) ((Word16) result)))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283 var_out = (var1 > 0) ? MAX_16 : MIN_16;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 var_out = extract_l (result);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 counter.extract_l--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294 counter.shl++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
300 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 | Function Name : shr |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
302 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
303 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
305 | Arithmetically shift the 16 bit input var1 right var2 positions with |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
306 | sign extension. If var2 is negative, arithmetically shift var1 left by |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
307 | -var2 with sign extension. Saturate the result in case of underflows or |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
308 | overflows. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
310 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
311 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
312 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
313 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
314 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
315 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
316 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
318 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
319 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
320 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
321 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
323 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
324 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
325 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
326 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
329 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
334 Word16 shr (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
338 if (var2 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
339 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
340 var_out = shl (var1, -var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342 counter.shl--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
344 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
347 if (var2 >= 15)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
348 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
349 var_out = (var1 < 0) ? -1 : 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
350 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
351 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
352 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
353 if (var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
354 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 var_out = ~((~var1) >> var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
356 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 var_out = var1 >> var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 counter.shr++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
366 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
368 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
369
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
372 | Function Name : mult |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
373 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
376 | Performs the multiplication of var1 by var2 and gives a 16 bit result |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377 | which is scaled i.e.: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 | mult(var1,var2) = extract_l(L_shr((var1 times var2),15)) and |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379 | mult(-32768,-32768) = 32767. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
380 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
381 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
382 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
383 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
384 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
385 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
386 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
387 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
388 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
389 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
390 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
391 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
392 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
393 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
394 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
395 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
396 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
397 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
398 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
399 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
400 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
401 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
402 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
403 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
404
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
405 Word16 mult (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
406 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
407 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
408 Word32 L_product;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
409
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
410 L_product = (Word32) var1 *(Word32) var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
411
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
412 L_product = (L_product & (Word32) 0xffff8000L) >> 15;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
413
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 if (L_product & (Word32) 0x00010000L)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
415 L_product = L_product | (Word32) 0xffff0000L;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
416
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417 var_out = saturate (L_product);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
418 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
419 counter.mult++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
420 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
421 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
422 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
423
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
424 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
425 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
426 | Function Name : L_mult |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
427 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
428 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
429 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
430 | L_mult is the 32 bit result of the multiplication of var1 times var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
431 | with one shift left i.e.: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
432 | L_mult(var1,var2) = L_shl((var1 times var2),1) and |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
433 | L_mult(-32768,-32768) = 2147483647. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
434 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
435 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
436 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
437 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
438 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
439 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
440 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
441 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
442 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
443 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
444 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
445 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
446 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
447 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
448 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
449 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
450 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
451 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
452 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
453 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
454 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
455 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
456 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
457 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
458
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
459 Word32 L_mult (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
460 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
461 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
462
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
463 L_var_out = (Word32) var1 *(Word32) var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
464
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
465 if (L_var_out != (Word32) 0x40000000L)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
466 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
467 L_var_out *= 2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
468 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
469 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
470 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
471 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
472 L_var_out = MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
473 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
474
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
475 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
476 counter.L_mult++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
477 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
478 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
479 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
480
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
481 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
482 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
483 | Function Name : negate |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
484 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
485 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
486 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
487 | Negate var1 with saturation, saturate in the case where input is -32768:|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
488 | negate(var1) = sub(0,var1). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
489 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
490 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
491 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
492 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
493 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
494 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
495 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
496 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
497 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
498 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
499 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
500 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
501 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
502 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
503 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
504 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
505 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
506 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
507 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
508 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
509
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
510 Word16 negate (Word16 var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
511 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
512 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
513
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
514 var_out = (var1 == MIN_16) ? MAX_16 : -var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
515 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
516 counter.negate++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
517 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
518 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
519 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
520
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
521 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
522 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
523 | Function Name : extract_h |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
524 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
525 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
526 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
527 | Return the 16 MSB of L_var1. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
528 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
529 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
530 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
531 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
532 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
533 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
534 | 32 bit long signed integer (Word32 ) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
535 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
536 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
537 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
538 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
539 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
540 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
541 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
542 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
543 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
544 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
545 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
546 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
547 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
548
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
549 Word16 extract_h (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
550 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
551 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
552
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
553 var_out = (Word16) (L_var1 >> 16);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
554 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
555 counter.extract_h++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
556 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
557 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
558 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
559
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
560 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 | Function Name : extract_l |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
564 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
565 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
566 | Return the 16 LSB of L_var1. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
567 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
568 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
569 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
570 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
571 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
572 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
573 | 32 bit long signed integer (Word32 ) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
574 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
575 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
576 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
577 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
578 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
579 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
580 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
581 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
582 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
583 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
584 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
585 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
586 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
587
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
588 Word16 extract_l (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
589 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
590 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
591
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
592 var_out = (Word16) L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
593 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
594 counter.extract_l++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
595 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
596 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
597 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
598
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
599 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
600 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
601 | Function Name : round |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
602 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
603 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
604 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
605 | Round the lower 16 bits of the 32 bit input number into the MS 16 bits |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
606 | with saturation. Shift the resulting bits right by 16 and return the 16 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
607 | bit number: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
608 | round(L_var1) = extract_h(L_add(L_var1,32768)) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
609 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
610 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
611 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
612 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
613 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
614 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
615 | 32 bit long signed integer (Word32 ) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
616 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
617 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
618 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
619 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
620 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
621 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
622 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
623 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
624 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
625 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
626 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
627 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
628 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
629
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
630 Word16 round (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
631 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
632 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
633 Word32 L_rounded;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
634
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
635 L_rounded = L_add (L_var1, (Word32) 0x00008000L);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
636 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
637 counter.L_add--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
638 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
639 var_out = extract_h (L_rounded);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
640 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
641 counter.extract_h--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
642 counter.round++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
643 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
644 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
645 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
646
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
647 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
648 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
649 | Function Name : L_mac |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
650 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
651 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
652 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
653 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
654 | result to L_var3 with saturation, return a 32 bit result: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
655 | L_mac(L_var3,var1,var2) = L_add(L_var3,L_mult(var1,var2)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
656 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
657 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
658 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
659 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
660 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
661 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
662 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
663 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
664 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
665 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
666 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
667 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
668 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
669 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
670 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
671 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
672 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
673 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
674 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
675 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
676 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
677 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
678 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
679 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
680 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
681 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
682 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
683
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
684 Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
685 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
686 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
687 Word32 L_product;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
688
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
689 L_product = L_mult (var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
690 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
691 counter.L_mult--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
692 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
693 L_var_out = L_add (L_var3, L_product);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
694 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
695 counter.L_add--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
696 counter.L_mac++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
697 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
698 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
699 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
700
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
701 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
702 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
703 | Function Name : L_msu |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
704 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
705 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
706 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
707 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
708 | bit result to L_var3 with saturation, return a 32 bit result: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
709 | L_msu(L_var3,var1,var2) = L_sub(L_var3,L_mult(var1,var2)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
710 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
711 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
712 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
713 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
714 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
715 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
716 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
717 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
718 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
719 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
720 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
721 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
722 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
723 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
724 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
725 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
726 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
727 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
728 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
729 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
730 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
731 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
732 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
733 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
734 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
735 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
736 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
737
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
738 Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
739 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
740 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
741 Word32 L_product;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
742
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
743 L_product = L_mult (var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
744 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
745 counter.L_mult--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
746 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
747 L_var_out = L_sub (L_var3, L_product);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
748 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
749 counter.L_sub--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
750 counter.L_msu++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
751 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
752 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
753 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
754
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
755 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
756 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
757 | Function Name : L_macNs |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
758 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
759 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
760 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
761 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
762 | result to L_var3 without saturation, return a 32 bit result. Generate |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
763 | carry and overflow values : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
764 | L_macNs(L_var3,var1,var2) = L_add_c(L_var3,L_mult(var1,var2)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
765 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
766 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
767 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
768 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
769 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
770 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
771 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
772 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
773 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
774 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
775 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
776 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
777 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
778 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
779 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
780 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
781 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
782 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
783 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
784 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
785 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
786 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
787 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
788 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
789 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
790 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
791 | Caution : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
792 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
793 | In some cases the Carry flag has to be cleared or set before using |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
794 | operators which take into account its value. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
795 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
796 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
797
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
798 Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
799 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
800 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
801
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
802 L_var_out = L_mult (var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
803 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
804 counter.L_mult--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
805 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
806 L_var_out = L_add_c (L_var3, L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
807 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
808 counter.L_add_c--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
809 counter.L_macNs++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
810 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
811 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
812 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
813
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
814 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
815 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
816 | Function Name : L_msuNs |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
817 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
818 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
819 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
820 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
821 | bit result from L_var3 without saturation, return a 32 bit result. Ge- |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
822 | nerate carry and overflow values : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
823 | L_msuNs(L_var3,var1,var2) = L_sub_c(L_var3,L_mult(var1,var2)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
824 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
825 | Complexity weight : 1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
826 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
827 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
828 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
829 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
830 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
831 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
832 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
833 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
834 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
835 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
836 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
837 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
838 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
839 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
840 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
841 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
842 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
843 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
844 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
845 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
846 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
847 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
848 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
849 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
850 | Caution : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
851 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
852 | In some cases the Carry flag has to be cleared or set before using |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
853 | operators which take into account its value. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
854 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
855 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
856
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
857 Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
858 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
859 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
860
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
861 L_var_out = L_mult (var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
862 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
863 counter.L_mult--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
864 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
865 L_var_out = L_sub_c (L_var3, L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
866 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
867 counter.L_sub_c--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
868 counter.L_msuNs++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
869 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
870 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
871 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
872
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
873 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
874 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
875 | Function Name : L_add |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
876 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
877 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
878 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
879 | 32 bits addition of the two 32 bits variables (L_var1+L_var2) with |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
880 | overflow control and saturation; the result is set at +2147483647 when |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
881 | overflow occurs or at -2147483648 when underflow occurs. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
882 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
883 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
884 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
885 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
886 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
887 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
888 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
889 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
890 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
891 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
892 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
893 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
894 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
895 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
896 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
897 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
898 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
899 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
900 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
901 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
902 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
903 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
904
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
905 Word32 L_add (Word32 L_var1, Word32 L_var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
906 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
907 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
908
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
909 L_var_out = L_var1 + L_var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
910
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
911 if (((L_var1 ^ L_var2) & MIN_32) == 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
912 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
913 if ((L_var_out ^ L_var1) & MIN_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
914 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
915 L_var_out = (L_var1 < 0) ? MIN_32 : MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
916 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
917 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
918 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
919 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
920 counter.L_add++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
921 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
922 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
923 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
924
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
925 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
926 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
927 | Function Name : L_sub |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
928 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
929 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
930 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
931 | 32 bits subtraction of the two 32 bits variables (L_var1-L_var2) with |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
932 | overflow control and saturation; the result is set at +2147483647 when |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
933 | overflow occurs or at -2147483648 when underflow occurs. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
934 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
935 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
936 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
937 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
938 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
939 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
940 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
941 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
942 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
943 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
944 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
945 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
946 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
947 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
948 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
949 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
950 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
951 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
952 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
953 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
954 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
955 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
956
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
957 Word32 L_sub (Word32 L_var1, Word32 L_var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
958 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
959 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
960
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
961 L_var_out = L_var1 - L_var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
962
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
963 if (((L_var1 ^ L_var2) & MIN_32) != 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
964 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
965 if ((L_var_out ^ L_var1) & MIN_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
966 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
967 L_var_out = (L_var1 < 0L) ? MIN_32 : MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
968 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
969 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
970 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
971 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
972 counter.L_sub++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
973 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
974 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
975 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
976
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
977 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
978 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
979 | Function Name : L_add_c |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
980 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
981 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
982 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
983 | Performs 32 bits addition of the two 32 bits variables (L_var1+L_var2+C)|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
984 | with carry. No saturation. Generate carry and Overflow values. The car- |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
985 | ry and overflow values are binary variables which can be tested and as- |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
986 | signed values. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
987 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
988 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
989 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
990 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
991 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
992 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
993 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
994 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
995 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
996 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
997 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
998 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
999 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1000 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1001 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1002 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1003 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1004 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1005 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1006 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1007 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1008 | Caution : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1009 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1010 | In some cases the Carry flag has to be cleared or set before using |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1011 | operators which take into account its value. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1012 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1013 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1014 Word32 L_add_c (Word32 L_var1, Word32 L_var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1015 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1016 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1017 Word32 L_test;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1018 Flag carry_int = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1019
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1020 L_var_out = L_var1 + L_var2 + Carry;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1021
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1022 L_test = L_var1 + L_var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1023
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1024 if ((L_var1 > 0) && (L_var2 > 0) && (L_test < 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1025 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1026 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1027 carry_int = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1028 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1029 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1030 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1031 if ((L_var1 < 0) && (L_var2 < 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1032 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1033 if (L_test >= 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1034 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1035 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1036 carry_int = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1037 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1038 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1039 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1040 Overflow = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1041 carry_int = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1042 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1043 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1044 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1045 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1046 if (((L_var1 ^ L_var2) < 0) && (L_test >= 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1047 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1048 Overflow = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1049 carry_int = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1050 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1051 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1052 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1053 Overflow = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1054 carry_int = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1055 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1056 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1057 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1058
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1059 if (Carry)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1060 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1061 if (L_test == MAX_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1062 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1063 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1064 Carry = carry_int;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1065 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1066 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1067 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1068 if (L_test == (Word32) 0xFFFFFFFFL)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1069 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1070 Carry = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1071 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1072 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1073 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1074 Carry = carry_int;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1075 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1076 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1077 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1078 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1079 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1080 Carry = carry_int;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1081 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1082
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1083 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1084 counter.L_add_c++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1085 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1086 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1087 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1088
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1089 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1090 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1091 | Function Name : L_sub_c |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1092 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1093 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1094 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1095 | Performs 32 bits subtraction of the two 32 bits variables with carry |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1096 | (borrow) : L_var1-L_var2-C. No saturation. Generate carry and Overflow |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1097 | values. The carry and overflow values are binary variables which can |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1098 | be tested and assigned values. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1099 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1100 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1101 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1102 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1103 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1104 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1105 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1106 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1107 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1108 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1109 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1110 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1111 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1112 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1113 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1114 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1115 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1116 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1117 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1118 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1119 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1120 | Caution : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1121 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1122 | In some cases the Carry flag has to be cleared or set before using |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1123 | operators which take into account its value. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1124 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1125 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1126
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1127 Word32 L_sub_c (Word32 L_var1, Word32 L_var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1128 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1129 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1130 Word32 L_test;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1131 Flag carry_int = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1132
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1133 if (Carry)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1134 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1135 Carry = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1136 if (L_var2 != MIN_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1137 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1138 L_var_out = L_add_c (L_var1, -L_var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1139 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1140 counter.L_add_c--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1141 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1142 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1143 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1144 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1145 L_var_out = L_var1 - L_var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1146 if (L_var1 > 0L)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1147 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1148 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1149 Carry = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1150 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1151 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1152 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1153 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1154 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1155 L_var_out = L_var1 - L_var2 - (Word32) 0X00000001L;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1156 L_test = L_var1 - L_var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1157
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1158 if ((L_test < 0) && (L_var1 > 0) && (L_var2 < 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1159 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1160 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1161 carry_int = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1162 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1163 else if ((L_test > 0) && (L_var1 < 0) && (L_var2 > 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1164 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1165 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1166 carry_int = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1167 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1168 else if ((L_test > 0) && ((L_var1 ^ L_var2) > 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1169 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1170 Overflow = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1171 carry_int = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1172 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1173 if (L_test == MIN_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1174 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1175 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1176 Carry = carry_int;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1177 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1178 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1179 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1180 Carry = carry_int;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1181 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1182 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1183
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1184 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1185 counter.L_sub_c++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1186 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1187 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1188 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1189
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1190 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1191 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1192 | Function Name : L_negate |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1193 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1194 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1195 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1196 | Negate the 32 bit variable L_var1 with saturation; saturate in the case |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1197 | where input is -2147483648 (0x8000 0000). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1198 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1199 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1200 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1201 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1202 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1203 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1204 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1205 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1206 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1207 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1208 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1209 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1210 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1211 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1212 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1213 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1214 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1215 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1216 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1217
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1218 Word32 L_negate (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1219 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1220 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1221
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1222 L_var_out = (L_var1 == MIN_32) ? MAX_32 : -L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1223 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1224 counter.L_negate++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1225 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1226 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1227 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1228
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1229 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1230 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1231 | Function Name : mult_r |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1232 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1233 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1234 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1235 | Same as mult with rounding, i.e.: |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1236 | mult_r(var1,var2) = extract_l(L_shr(((var1 * var2) + 16384),15)) and |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1237 | mult_r(-32768,-32768) = 32767. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1238 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1239 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1240 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1241 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1242 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1243 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1244 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1245 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1246 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1247 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1248 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1249 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1250 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1251 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1252 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1253 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1254 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1255 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1256 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1257 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1258 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1259 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1260 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1261 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1262
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1263 Word16 mult_r (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1264 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1265 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1266 Word32 L_product_arr;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1267
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1268 L_product_arr = (Word32) var1 *(Word32) var2; /* product */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1269 L_product_arr += (Word32) 0x00004000L; /* round */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1270 L_product_arr &= (Word32) 0xffff8000L;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1271 L_product_arr >>= 15; /* shift */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1272
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1273 if (L_product_arr & (Word32) 0x00010000L) /* sign extend when necessary */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1274 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1275 L_product_arr |= (Word32) 0xffff0000L;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1276 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1277 var_out = saturate (L_product_arr);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1278 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1279 counter.mult_r++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1280 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1281 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1282 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1283
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1284 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1285 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1286 | Function Name : L_shl |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1287 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1288 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1289 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1290 | Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1291 | fill the var2 LSB of the result. If var2 is negative, arithmetically |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1292 | shift L_var1 right by -var2 with sign extension. Saturate the result in |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1293 | case of underflows or overflows. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1294 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1295 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1296 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1297 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1298 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1299 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1300 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1301 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1302 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1303 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1304 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1305 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1306 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1307 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1308 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1309 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1310 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1311 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1312 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1313 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1314 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1315 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1316 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1317
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1318 Word32 L_shl (Word32 L_var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1319 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1320 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1321
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1322 if (var2 <= 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1323 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1324 L_var_out = L_shr (L_var1, -var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1325 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1326 counter.L_shr--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1327 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1328 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1329 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1330 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1331 for (; var2 > 0; var2--)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1332 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1333 if (L_var1 > (Word32) 0X3fffffffL)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1334 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1335 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1336 L_var_out = MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1337 break;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1338 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1339 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1340 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1341 if (L_var1 < (Word32) 0xc0000000L)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1342 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1343 Overflow = 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1344 L_var_out = MIN_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1345 break;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1346 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1347 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1348 L_var1 *= 2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1349 L_var_out = L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1350 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1351 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1352 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1353 counter.L_shl++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1354 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1355 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1356 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1357
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1358 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1359 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1360 | Function Name : L_shr |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1361 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1362 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1363 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1364 | Arithmetically shift the 32 bit input L_var1 right var2 positions with |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1365 | sign extension. If var2 is negative, arithmetically shift L_var1 left |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1366 | by -var2 and zero fill the -var2 LSB of the result. Saturate the result |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1367 | in case of underflows or overflows. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1368 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1369 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1370 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1371 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1372 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1373 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1374 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1375 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1376 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1377 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1378 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1379 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1380 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1381 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1382 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1383 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1384 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1385 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1386 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1387 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1388 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1389 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1390 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1391
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1392 Word32 L_shr (Word32 L_var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1393 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1394 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1395
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1396 if (var2 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1397 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1398 L_var_out = L_shl (L_var1, -var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1399 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1400 counter.L_shl--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1401 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1402 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1403 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1404 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1405 if (var2 >= 31)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1406 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1407 L_var_out = (L_var1 < 0L) ? -1 : 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1408 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1409 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1410 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1411 if (L_var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1412 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1413 L_var_out = ~((~L_var1) >> var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1414 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1415 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1416 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1417 L_var_out = L_var1 >> var2;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1418 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1419 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1420 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1421 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1422 counter.L_shr++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1423 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1424 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1425 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1426
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1427 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1428 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1429 | Function Name : shr_r |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1430 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1431 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1432 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1433 | Same as shr(var1,var2) but with rounding. Saturate the result in case of|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1434 | underflows or overflows : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1435 | - If var2 is greater than zero : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1436 | if (sub(shl(shr(var1,var2),1),shr(var1,sub(var2,1)))) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1437 | is equal to zero |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1438 | then |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1439 | shr_r(var1,var2) = shr(var1,var2) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1440 | else |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1441 | shr_r(var1,var2) = add(shr(var1,var2),1) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1442 | - If var2 is less than or equal to zero : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1443 | shr_r(var1,var2) = shr(var1,var2). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1444 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1445 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1446 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1447 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1448 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1449 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1450 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1451 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1452 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1453 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1454 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1455 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1456 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1457 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1458 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1459 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1460 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1461 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1462 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1463 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1464 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1465 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1466 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1467 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1468
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1469 Word16 shr_r (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1470 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1471 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1472
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1473 if (var2 > 15)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1474 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1475 var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1476 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1477 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1478 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1479 var_out = shr (var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1480 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1481 counter.shr--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1482 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1483
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1484 if (var2 > 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1485 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1486 if ((var1 & ((Word16) 1 << (var2 - 1))) != 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1487 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1488 var_out++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1489 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1490 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1491 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1492 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1493 counter.shr_r++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1494 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1495 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1496 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1497
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1498 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1499 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1500 | Function Name : mac_r |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1501 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1502 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1503 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1504 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1505 | result to L_var3 with saturation. Round the LS 16 bits of the result |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1506 | into the MS 16 bits with saturation and shift the result right by 16. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1507 | Return a 16 bit result. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1508 | mac_r(L_var3,var1,var2) = round(L_mac(L_var3,var1,var2)) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1509 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1510 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1511 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1512 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1513 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1514 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1515 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1516 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1517 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1518 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1519 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1520 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1521 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1522 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1523 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1524 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1525 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1526 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1527 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1528 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1529 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1530 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1531 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1532 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1533 | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1534 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1535 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1536
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1537 Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1538 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1539 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1540
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1541 L_var3 = L_mac (L_var3, var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1542 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1543 counter.L_mac--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1544 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1545 L_var3 = L_add (L_var3, (Word32) 0x00008000L);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1546 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1547 counter.L_add--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1548 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1549 var_out = extract_h (L_var3);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1550 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1551 counter.extract_h--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1552 counter.mac_r++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1553 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1554 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1555 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1556
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1557 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1558 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1559 | Function Name : msu_r |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1560 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1561 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1562 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1563 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1564 | bit result to L_var3 with saturation. Round the LS 16 bits of the res- |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1565 | ult into the MS 16 bits with saturation and shift the result right by |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1566 | 16. Return a 16 bit result. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1567 | msu_r(L_var3,var1,var2) = round(L_msu(L_var3,var1,var2)) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1568 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1569 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1570 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1571 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1572 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1573 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1574 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1575 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1576 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1577 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1578 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1579 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1580 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1581 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1582 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1583 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1584 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1585 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1586 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1587 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1588 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1589 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1590 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1591 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1592 | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1593 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1594 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1595
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1596 Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1597 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1598 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1599
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1600 L_var3 = L_msu (L_var3, var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1601 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1602 counter.L_msu--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1603 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1604 L_var3 = L_add (L_var3, (Word32) 0x00008000L);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1605 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1606 counter.L_add--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1607 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1608 var_out = extract_h (L_var3);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1609 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1610 counter.extract_h--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1611 counter.msu_r++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1612 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1613 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1614 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1615
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1616 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1617 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1618 | Function Name : L_deposit_h |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1619 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1620 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1621 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1622 | Deposit the 16 bit var1 into the 16 MS bits of the 32 bit output. The |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1623 | 16 LS bits of the output are zeroed. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1624 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1625 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1626 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1627 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1628 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1629 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1630 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1631 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1632 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1633 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1634 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1635 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1636 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1637 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1638 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1639 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1640 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1641 | range : 0x8000 0000 <= var_out <= 0x7fff 0000. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1642 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1643 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1644
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1645 Word32 L_deposit_h (Word16 var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1646 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1647 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1648
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1649 L_var_out = (Word32) var1 << 16;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1650 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1651 counter.L_deposit_h++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1652 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1653 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1654 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1655
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1656 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1657 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1658 | Function Name : L_deposit_l |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1659 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1660 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1661 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1662 | Deposit the 16 bit var1 into the 16 LS bits of the 32 bit output. The |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1663 | 16 MS bits of the output are sign extended. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1664 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1665 | Complexity weight : 2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1666 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1667 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1668 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1669 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1670 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1671 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1672 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1673 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1674 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1675 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1676 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1677 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1678 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1679 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1680 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1681 | range : 0xFFFF 8000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1682 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1683 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1684
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1685 Word32 L_deposit_l (Word16 var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1686 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1687 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1688
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1689 L_var_out = (Word32) var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1690 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1691 counter.L_deposit_l++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1692 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1693 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1694 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1695
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1696 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1697 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1698 | Function Name : L_shr_r |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1699 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1700 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1701 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1702 | Same as L_shr(L_var1,var2) but with rounding. Saturate the result in |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1703 | case of underflows or overflows : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1704 | - If var2 is greater than zero : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1705 | if (L_sub(L_shl(L_shr(L_var1,var2),1),L_shr(L_var1,sub(var2,1))))|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1706 | is equal to zero |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1707 | then |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1708 | L_shr_r(L_var1,var2) = L_shr(L_var1,var2) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1709 | else |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1710 | L_shr_r(L_var1,var2) = L_add(L_shr(L_var1,var2),1) |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1711 | - If var2 is less than or equal to zero : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1712 | L_shr_r(L_var1,var2) = L_shr(L_var1,var2). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1713 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1714 | Complexity weight : 3 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1715 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1716 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1717 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1718 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1719 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1720 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1721 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1722 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1723 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1724 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1725 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1726 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1727 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1728 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1729 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1730 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1731 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1732 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1733 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1734 | range : 0x8000 0000 <= var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1735 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1736 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1737
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1738 Word32 L_shr_r (Word32 L_var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1739 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1740 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1741
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1742 if (var2 > 31)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1743 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1744 L_var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1745 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1746 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1747 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1748 L_var_out = L_shr (L_var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1749 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1750 counter.L_shr--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1751 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1752 if (var2 > 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1753 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1754 if ((L_var1 & ((Word32) 1 << (var2 - 1))) != 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1755 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1756 L_var_out++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1757 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1758 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1759 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1760 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1761 counter.L_shr_r++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1762 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1763 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1764 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1765
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1766 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1767 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1768 | Function Name : L_abs |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1769 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1770 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1771 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1772 | Absolute value of L_var1; Saturate in case where the input is |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1773 | -214783648 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1774 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1775 | Complexity weight : 3 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1776 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1777 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1778 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1779 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1780 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1781 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1782 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1783 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1784 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1785 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1786 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1787 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1788 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1789 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1790 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1791 | range : 0x0000 0000 <= var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1792 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1793 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1794
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1795 Word32 L_abs (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1796 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1797 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1798
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1799 if (L_var1 == MIN_32)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1800 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1801 L_var_out = MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1802 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1803 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1804 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1805 if (L_var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1806 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1807 L_var_out = -L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1808 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1809 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1810 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1811 L_var_out = L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1812 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1813 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1814
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1815 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1816 counter.L_abs++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1817 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1818 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1819 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1820
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1821 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1822 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1823 | Function Name : L_sat |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1824 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1825 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1826 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1827 | 32 bit L_var1 is set to 2147483647 if an overflow occured or to |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1828 | -2147483648 if an underflow occured on the most recent L_add_c, |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1829 | L_sub_c, L_macNs or L_msuNs operations. The carry and overflow values |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1830 | are binary values which can be tested and assigned values. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1831 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1832 | Complexity weight : 4 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1833 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1834 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1835 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1836 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1837 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1838 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1839 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1840 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1841 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1842 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1843 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1844 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1845 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1846 | L_var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1847 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1848 | range : 0x8000 0000 <= var_out <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1849 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1850 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1851
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1852 Word32 L_sat (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1853 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1854 Word32 L_var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1855
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1856 L_var_out = L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1857
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1858 if (Overflow)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1859 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1860
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1861 if (Carry)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1862 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1863 L_var_out = MIN_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1864 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1865 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1866 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1867 L_var_out = MAX_32;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1868 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1869
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1870 Carry = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1871 Overflow = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1872 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1873 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1874 counter.L_sat++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1875 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1876 return (L_var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1877 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1878
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1879 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1880 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1881 | Function Name : norm_s |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1882 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1883 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1884 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1885 | Produces the number of left shift needed to normalize the 16 bit varia- |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1886 | ble var1 for positive values on the interval with minimum of 16384 and |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1887 | maximum of 32767, and for negative values on the interval with minimum |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1888 | of -32768 and maximum of -16384; in order to normalize the result, the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1889 | following operation must be done : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1890 | norm_var1 = shl(var1,norm_s(var1)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1891 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1892 | Complexity weight : 15 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1893 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1894 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1895 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1896 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1897 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1898 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1899 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1900 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1901 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1902 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1903 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1904 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1905 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1906 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1907 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1908 | range : 0x0000 0000 <= var_out <= 0x0000 000f. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1909 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1910 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1911
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1912 Word16 norm_s (Word16 var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1913 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1914 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1915
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1916 if (var1 == 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1917 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1918 var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1919 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1920 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1921 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1922 if (var1 == (Word16) 0xffff)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1923 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1924 var_out = 15;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1925 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1926 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1927 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1928 if (var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1929 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1930 var1 = ~var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1931 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1932 for (var_out = 0; var1 < 0x4000; var_out++)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1933 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1934 var1 <<= 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1935 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1936 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1937 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1938
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1939 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1940 counter.norm_s++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1941 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1942 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1943 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1944
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1945 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1946 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1947 | Function Name : div_s |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1948 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1949 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1950 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1951 | Produces a result which is the fractional integer division of var1 by |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1952 | var2; var1 and var2 must be positive and var2 must be greater or equal |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1953 | to var1; the result is positive (leading bit equal to 0) and truncated |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1954 | to 16 bits. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1955 | If var1 = var2 then div(var1,var2) = 32767. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1956 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1957 | Complexity weight : 18 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1958 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1959 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1960 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1961 | var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1962 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1963 | range : 0x0000 0000 <= var1 <= var2 and var2 != 0. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1964 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1965 | var2 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1966 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1967 | range : var1 <= var2 <= 0x0000 7fff and var2 != 0. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1968 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1969 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1970 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1971 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1972 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1973 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1974 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1975 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1976 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1977 | range : 0x0000 0000 <= var_out <= 0x0000 7fff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1978 | It's a Q15 value (point between b15 and b14). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1979 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1980 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1981
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1982 Word16 div_s (Word16 var1, Word16 var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1983 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1984 Word16 var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1985 Word16 iteration;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1986 Word32 L_num;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1987 Word32 L_denom;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1988
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1989 #if 0
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1990 if ((var1 > var2) || (var1 < 0) || (var2 < 0))
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1991 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1992 printf ("Division Error var1=%d var2=%d\n", var1, var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1993 exit (0);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1994 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1995 if (var2 == 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1996 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1997 printf ("Division by 0, Fatal error \n");
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1998 exit (0);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1999 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2000 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2001
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2002 if (var1 == 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2003 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2004 var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2005 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2006 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2007 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2008 if (var1 == var2)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2009 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2010 var_out = MAX_16;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2011 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2012 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2013 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2014 L_num = L_deposit_l (var1);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2015 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2016 counter.L_deposit_l--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2017 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2018 L_denom = L_deposit_l (var2);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2019 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2020 counter.L_deposit_l--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2021 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2022
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2023 for (iteration = 0; iteration < 15; iteration++)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2024 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2025 var_out <<= 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2026 L_num <<= 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2027
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2028 if (L_num >= L_denom)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2029 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2030 L_num = L_sub (L_num, L_denom);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2031 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2032 counter.L_sub--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2033 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2034 var_out = add (var_out, 1);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2035 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2036 counter.add--;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2037 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2038 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2039 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2040 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2041 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2042
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2043 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2044 counter.div_s++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2045 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2046 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2047 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2048
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2049 /*___________________________________________________________________________
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2050 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2051 | Function Name : norm_l |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2052 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2053 | Purpose : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2054 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2055 | Produces the number of left shifts needed to normalize the 32 bit varia-|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2056 | ble L_var1 for positive values on the interval with minimum of |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2057 | 1073741824 and maximum of 2147483647, and for negative values on the in-|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2058 | terval with minimum of -2147483648 and maximum of -1073741824; in order |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2059 | to normalize the result, the following operation must be done : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2060 | norm_L_var1 = L_shl(L_var1,norm_l(L_var1)). |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2061 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2062 | Complexity weight : 30 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2063 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2064 | Inputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2065 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2066 | L_var1 |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2067 | 32 bit long signed integer (Word32) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2068 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2069 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2070 | Outputs : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2071 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2072 | none |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2073 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2074 | Return Value : |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2075 | |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2076 | var_out |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2077 | 16 bit short signed integer (Word16) whose value falls in the |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2078 | range : 0x0000 0000 <= var_out <= 0x0000 001f. |
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2079 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2080 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2081
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2082 Word16 norm_l (Word32 L_var1)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2083 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2084 Word16 var_out;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2085
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2086 if (L_var1 == 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2087 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2088 var_out = 0;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2089 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2090 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2091 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2092 if (L_var1 == (Word32) 0xffffffffL)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2093 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2094 var_out = 31;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2095 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2096 else
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2097 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2098 if (L_var1 < 0)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2099 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2100 L_var1 = ~L_var1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2101 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2102 for (var_out = 0; L_var1 < (Word32) 0x40000000L; var_out++)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2103 {
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2104 L_var1 <<= 1;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2105 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2106 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2107 }
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2108
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2109 #if (WMOPS)
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2110 counter.norm_l++;
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2111 #endif
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2112 return (var_out);
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2113 }