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annotate libtwamr/basicop2.c @ 483:4f13db3a7086

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doc/Utils-overview: document new utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:26:12 +0000
parents 57b4053559ff
children
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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 | $Id $
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6 |___________________________________________________________________________|
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7 */
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8
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9 /*___________________________________________________________________________
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10 | |
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11 | Include-Files |
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12 |___________________________________________________________________________|
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13 */
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14
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15 #include <stdint.h>
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16 #include "typedef.h"
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17 #include "namespace.h"
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18 #include "basic_op.h"
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19
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20 #if (WMOPS)
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21 #include "count.h"
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22 extern BASIC_OP multiCounter[MAXCOUNTERS];
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23 extern int currCounter;
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24 #endif
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25
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26 /*___________________________________________________________________________
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27 | |
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28 | Functions |
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29 |___________________________________________________________________________|
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30 */
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31
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32 /*___________________________________________________________________________
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33 | |
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34 | Function Name : saturate |
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35 | |
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36 | Purpose : |
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37 | |
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38 | Limit the 32 bit input to the range of a 16 bit word. |
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39 | |
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40 | Inputs : |
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41 | |
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42 | L_var1 |
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43 | 32 bit long signed integer (Word32) whose value falls in the |
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44 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
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45 | |
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46 | Outputs : |
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47 | |
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48 | none |
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49 | |
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50 | Return Value : |
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51 | |
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52 | var_out |
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53 | 16 bit short signed integer (Word16) whose value falls in the |
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54 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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55 |___________________________________________________________________________|
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56 */
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57
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58 static inline Word16
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59 saturate (Word32 L_var1)
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60 {
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61 Word16 var_out;
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62
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63 if (L_var1 > 0X00007fffL)
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64 {
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65 Overflow = 1;
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66 var_out = MAX_16;
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67 }
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68 else if (L_var1 < (Word32) 0xffff8000L)
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69 {
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70 Overflow = 1;
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71 var_out = MIN_16;
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72 }
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73 else
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74 {
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75 var_out = extract_l (L_var1);
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76 #if (WMOPS)
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77 multiCounter[currCounter].extract_l--;
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78 #endif
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79 }
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80
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81 return (var_out);
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82 }
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83
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84 /*___________________________________________________________________________
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85 | |
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86 | Function Name : add |
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87 | |
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88 | Purpose : |
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89 | |
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90 | Performs the addition (var1+var2) with overflow control and saturation;|
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91 | the 16 bit result is set at +32767 when overflow occurs or at -32768 |
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92 | when underflow occurs. |
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93 | |
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94 | Complexity weight : 1 |
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95 | |
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96 | Inputs : |
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97 | |
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98 | var1 |
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99 | 16 bit short signed integer (Word16) whose value falls in the |
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100 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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101 | |
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102 | var2 |
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103 | 16 bit short signed integer (Word16) whose value falls in the |
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104 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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105 | |
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106 | Outputs : |
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107 | |
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108 | none |
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109 | |
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110 | Return Value : |
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111 | |
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112 | var_out |
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113 | 16 bit short signed integer (Word16) whose value falls in the |
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114 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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115 |___________________________________________________________________________|
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116 */
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117
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118 Word16 add (Word16 var1, Word16 var2)
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119 {
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120 Word16 var_out;
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121 Word32 L_sum;
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122
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123 L_sum = (Word32) var1 + var2;
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124 var_out = saturate (L_sum);
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125 #if (WMOPS)
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126 multiCounter[currCounter].add++;
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127 #endif
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128 return (var_out);
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129 }
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130
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131 /*___________________________________________________________________________
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132 | |
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133 | Function Name : sub |
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134 | |
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135 | Purpose : |
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136 | |
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137 | Performs the subtraction (var1+var2) with overflow control and satu- |
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138 | ration; the 16 bit result is set at +32767 when overflow occurs or at |
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139 | -32768 when underflow occurs. |
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140 | |
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141 | Complexity weight : 1 |
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142 | |
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143 | Inputs : |
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144 | |
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145 | var1 |
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146 | 16 bit short signed integer (Word16) whose value falls in the |
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147 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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148 | |
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149 | var2 |
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150 | 16 bit short signed integer (Word16) whose value falls in the |
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151 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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diff changeset
152 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 Word16 sub (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 Word32 L_diff;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 L_diff = (Word32) var1 - var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 var_out = saturate (L_diff);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 multiCounter[currCounter].sub++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 | Function Name : abs_s |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 | Absolute value of var1; abs_s(-32768) = 32767. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 | range : 0x0000 0000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 Word16 abs_s (Word16 var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 if (var1 == (Word16) 0X8000)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 var_out = MAX_16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 if (var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 var_out = -var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 var_out = var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 multiCounter[currCounter].abs_s++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 | Function Name : shl |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 | Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 | the var2 LSB of the result. If var2 is negative, arithmetically shift |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 | var1 right by -var2 with sign extension. Saturate the result in case of |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 | underflows or overflows. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 Word16 shl (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 Word32 result;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 if (var2 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273 if (var2 < -16)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 var2 = -16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 var_out = shr (var1, -var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277 multiCounter[currCounter].shr--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282 result = (Word32) var1 *((Word32) 1 << var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 if ((var2 > 15 && var1 != 0) || (result != (Word32) ((Word16) result)))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 var_out = (var1 > 0) ? MAX_16 : MIN_16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 var_out = extract_l (result);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293 multiCounter[currCounter].extract_l--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298 multiCounter[currCounter].shl++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
300 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
302
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
303 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
305 | Function Name : shr |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
306 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
307 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
308 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 | Arithmetically shift the 16 bit input var1 right var2 positions with |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
310 | sign extension. If var2 is negative, arithmetically shift var1 left by |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
311 | -var2 with sign extension. Saturate the result in case of underflows or |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
312 | overflows. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
313 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
314 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
315 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
316 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
318 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
319 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
320 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
321 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
323 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
324 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
325 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
326 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
329 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
334 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
338 Word16 shr (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
339 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
340 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342 if (var2 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
344 if (var2 < -16)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 var2 = -16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346 var_out = shl (var1, -var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
347 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
348 multiCounter[currCounter].shl--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
349 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
350 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
351 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
352 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
353 if (var2 >= 15)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
354 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 var_out = (var1 < 0) ? -1 : 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
356 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 if (var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361 var_out = ~((~var1) >> var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 var_out = var1 >> var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
366 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
368 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
369
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371 multiCounter[currCounter].shr++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
372 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
373 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
376 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 | Function Name : mult |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
380 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
381 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
382 | Performs the multiplication of var1 by var2 and gives a 16 bit result |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
383 | which is scaled i.e.: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
384 | mult(var1,var2) = extract_l(L_shr((var1 times var2),15)) and |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
385 | mult(-32768,-32768) = 32767. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
386 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
387 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
388 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
389 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
390 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
391 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
392 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
393 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
394 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
395 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
396 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
397 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
398 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
399 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
400 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
401 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
402 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
403 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
404 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
405 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
406 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
407 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
408 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
409 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
410
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
411 Word16 mult (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
412 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
413 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 Word32 L_product;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
415
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
416 L_product = (Word32) var1 *(Word32) var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
418 L_product = (L_product & (Word32) 0xffff8000L) >> 15;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
419
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
420 if (L_product & (Word32) 0x00010000L)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
421 L_product = L_product | (Word32) 0xffff0000L;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
422
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
423 var_out = saturate (L_product);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
424 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
425 multiCounter[currCounter].mult++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
426 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
427 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
428 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
429
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
430 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
431 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
432 | Function Name : L_mult |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
433 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
434 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
435 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
436 | L_mult is the 32 bit result of the multiplication of var1 times var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
437 | with one shift left i.e.: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
438 | L_mult(var1,var2) = L_shl((var1 times var2),1) and |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
439 | L_mult(-32768,-32768) = 2147483647. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
440 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
441 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
442 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
443 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
444 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
445 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
446 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
447 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
448 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
449 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
450 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
451 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
452 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
453 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
454 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
455 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
456 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
457 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
458 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
459 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
460 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
461 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
462 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
463 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
464
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
465 Word32 L_mult (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
466 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
467 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
468
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
469 L_var_out = (Word32) var1 *(Word32) var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
470
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
471 if (L_var_out != (Word32) 0x40000000L)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
472 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
473 L_var_out *= 2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
474 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
475 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
476 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
477 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
478 L_var_out = MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
479 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
480
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
481 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
482 multiCounter[currCounter].L_mult++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
483 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
484 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
485 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
486
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
487 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
488 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
489 | Function Name : negate |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
490 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
491 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
492 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
493 | Negate var1 with saturation, saturate in the case where input is -32768:|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
494 | negate(var1) = sub(0,var1). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
495 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
496 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
497 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
498 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
499 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
500 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
501 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
502 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
503 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
504 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
505 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
506 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
507 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
508 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
509 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
510 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
511 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
512 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
513 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
514 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
515
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
516 Word16 negate (Word16 var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
517 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
518 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
519
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
520 var_out = (var1 == MIN_16) ? MAX_16 : -var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
521 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
522 multiCounter[currCounter].negate++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
523 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
524 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
525 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
526
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
527 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
528 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
529 | Function Name : extract_h |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
530 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
531 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
532 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
533 | Return the 16 MSB of L_var1. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
534 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
535 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
536 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
537 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
538 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
539 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
540 | 32 bit long signed integer (Word32 ) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
541 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
542 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
543 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
544 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
545 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
546 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
547 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
548 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
549 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
550 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
551 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
552 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
553 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
554
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
555 Word16 extract_h (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
556 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
557 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
558
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
559 var_out = (Word16) (L_var1 >> 16);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
560 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 multiCounter[currCounter].extract_h++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
564 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
565
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
566 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
567 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
568 | Function Name : extract_l |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
569 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
570 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
571 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
572 | Return the 16 LSB of L_var1. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
573 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
574 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
575 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
576 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
577 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
578 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
579 | 32 bit long signed integer (Word32 ) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
580 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
581 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
582 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
583 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
584 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
585 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
586 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
587 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
588 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
589 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
590 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
591 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
592 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
593
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
594 Word16 extract_l (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
595 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
596 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
597
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
598 var_out = (Word16) L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
599 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
600 multiCounter[currCounter].extract_l++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
601 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
602 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
603 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
604
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
605 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
606 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
607 | Function Name : round |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
608 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
609 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
610 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
611 | Round the lower 16 bits of the 32 bit input number into the MS 16 bits |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
612 | with saturation. Shift the resulting bits right by 16 and return the 16 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
613 | bit number: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
614 | round(L_var1) = extract_h(L_add(L_var1,32768)) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
615 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
616 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
617 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
618 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
619 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
620 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
621 | 32 bit long signed integer (Word32 ) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
622 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
623 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
624 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
625 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
626 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
627 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
628 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
629 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
630 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
631 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
632 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
633 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
634 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
635
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
636 Word16 round (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
637 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
638 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
639 Word32 L_rounded;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
640
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
641 L_rounded = L_add (L_var1, (Word32) 0x00008000L);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
642 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
643 multiCounter[currCounter].L_add--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
644 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
645 var_out = extract_h (L_rounded);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
646 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
647 multiCounter[currCounter].extract_h--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
648 multiCounter[currCounter].round++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
649 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
650 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
651 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
652
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
653 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
654 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
655 | Function Name : L_mac |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
656 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
657 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
658 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
659 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
660 | result to L_var3 with saturation, return a 32 bit result: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
661 | L_mac(L_var3,var1,var2) = L_add(L_var3,L_mult(var1,var2)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
662 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
663 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
664 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
665 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
666 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
667 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
668 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
669 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
670 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
671 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
672 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
673 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
674 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
675 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
676 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
677 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
678 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
679 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
680 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
681 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
682 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
683 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
684 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
685 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
686 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
687 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
688 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
689
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
690 Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
691 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
692 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
693 Word32 L_product;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
694
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
695 L_product = L_mult (var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
696 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
697 multiCounter[currCounter].L_mult--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
698 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
699 L_var_out = L_add (L_var3, L_product);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
700 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
701 multiCounter[currCounter].L_add--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
702 multiCounter[currCounter].L_mac++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
703 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
704 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
705 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
706
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
707 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
708 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
709 | Function Name : L_msu |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
710 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
711 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
712 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
713 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
714 | bit result to L_var3 with saturation, return a 32 bit result: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
715 | L_msu(L_var3,var1,var2) = L_sub(L_var3,L_mult(var1,var2)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
716 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
717 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
718 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
719 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
720 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
721 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
722 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
723 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
724 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
725 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
726 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
727 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
728 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
729 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
730 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
731 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
732 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
733 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
734 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
735 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
736 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
737 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
738 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
739 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
740 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
741 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
742 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
743
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
744 Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
745 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
746 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
747 Word32 L_product;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
748
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
749 L_product = L_mult (var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
750 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
751 multiCounter[currCounter].L_mult--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
752 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
753 L_var_out = L_sub (L_var3, L_product);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
754 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
755 multiCounter[currCounter].L_sub--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
756 multiCounter[currCounter].L_msu++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
757 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
758 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
759 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
760
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
761 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
762 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
763 | Function Name : L_macNs |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
764 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
765 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
766 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
767 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
768 | result to L_var3 without saturation, return a 32 bit result. Generate |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
769 | carry and overflow values : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
770 | L_macNs(L_var3,var1,var2) = L_add_c(L_var3,L_mult(var1,var2)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
771 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
772 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
773 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
774 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
775 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
776 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
777 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
778 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
779 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
780 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
781 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
782 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
783 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
784 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
785 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
786 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
787 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
788 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
789 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
790 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
791 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
792 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
793 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
794 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
795 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
796 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
797 | Caution : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
798 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
799 | In some cases the Carry flag has to be cleared or set before using |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
800 | operators which take into account its value. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
801 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
802 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
803
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
804 Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
805 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
806 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
807
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
808 L_var_out = L_mult (var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
809 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
810 multiCounter[currCounter].L_mult--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
811 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
812 L_var_out = L_add_c (L_var3, L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
813 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
814 multiCounter[currCounter].L_add_c--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
815 multiCounter[currCounter].L_macNs++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
816 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
817 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
818 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
819
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
820 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
821 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
822 | Function Name : L_msuNs |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
823 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
824 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
825 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
826 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
827 | bit result from L_var3 without saturation, return a 32 bit result. Ge- |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
828 | nerate carry and overflow values : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
829 | L_msuNs(L_var3,var1,var2) = L_sub_c(L_var3,L_mult(var1,var2)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
830 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
831 | Complexity weight : 1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
832 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
833 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
834 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
835 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
836 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
837 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
838 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
839 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
840 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
841 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
842 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
843 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
844 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
845 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
846 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
847 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
848 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
849 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
850 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
851 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
852 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
853 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
854 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
855 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
856 | Caution : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
857 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
858 | In some cases the Carry flag has to be cleared or set before using |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
859 | operators which take into account its value. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
860 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
861 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
862
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
863 Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
864 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
865 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
866
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
867 L_var_out = L_mult (var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
868 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
869 multiCounter[currCounter].L_mult--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
870 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
871 L_var_out = L_sub_c (L_var3, L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
872 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
873 multiCounter[currCounter].L_sub_c--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
874 multiCounter[currCounter].L_msuNs++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
875 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
876 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
877 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
878
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
879 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
880 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
881 | Function Name : L_add |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
882 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
883 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
884 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
885 | 32 bits addition of the two 32 bits variables (L_var1+L_var2) with |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
886 | overflow control and saturation; the result is set at +2147483647 when |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
887 | overflow occurs or at -2147483648 when underflow occurs. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
888 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
889 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
890 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
891 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
892 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
893 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
894 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
895 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
896 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
897 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
898 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
899 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
900 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
901 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
902 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
903 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
904 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
905 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
906 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
907 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
908 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
909 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
910
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
911 Word32 L_add (Word32 L_var1, Word32 L_var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
912 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
913 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
914
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
915 L_var_out = L_var1 + L_var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
916
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
917 if (((L_var1 ^ L_var2) & MIN_32) == 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
918 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
919 if ((L_var_out ^ L_var1) & MIN_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
920 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
921 L_var_out = (L_var1 < 0) ? MIN_32 : MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
922 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
923 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
924 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
925 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
926 multiCounter[currCounter].L_add++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
927 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
928 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
929 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
930
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
931 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
932 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
933 | Function Name : L_sub |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
934 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
935 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
936 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
937 | 32 bits subtraction of the two 32 bits variables (L_var1-L_var2) with |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
938 | overflow control and saturation; the result is set at +2147483647 when |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
939 | overflow occurs or at -2147483648 when underflow occurs. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
940 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
941 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
942 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
943 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
944 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
945 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
946 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
947 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
948 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
949 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
950 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
951 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
952 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
953 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
954 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
955 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
956 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
957 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
958 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
959 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
960 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
961 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
962
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
963 Word32 L_sub (Word32 L_var1, Word32 L_var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
964 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
965 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
966
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
967 L_var_out = L_var1 - L_var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
968
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
969 if (((L_var1 ^ L_var2) & MIN_32) != 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
970 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
971 if ((L_var_out ^ L_var1) & MIN_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
972 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
973 L_var_out = (L_var1 < 0L) ? MIN_32 : MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
974 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
975 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
976 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
977 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
978 multiCounter[currCounter].L_sub++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
979 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
980 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
981 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
982
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
983 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
984 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
985 | Function Name : L_add_c |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
986 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
987 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
988 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
989 | Performs 32 bits addition of the two 32 bits variables (L_var1+L_var2+C)|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
990 | with carry. No saturation. Generate carry and Overflow values. The car- |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
991 | ry and overflow values are binary variables which can be tested and as- |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
992 | signed values. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
993 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
994 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
995 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
996 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
997 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
998 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
999 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1000 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1001 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1002 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1003 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1004 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1005 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1006 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1007 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1008 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1009 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1010 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1011 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1012 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1013 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1014 | Caution : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1015 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1016 | In some cases the Carry flag has to be cleared or set before using |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1017 | operators which take into account its value. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1018 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1019 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1020 Word32 L_add_c (Word32 L_var1, Word32 L_var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1021 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1022 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1023 Word32 L_test;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1024 Flag carry_int = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1025
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1026 L_var_out = L_var1 + L_var2 + Carry;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1027
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1028 L_test = L_var1 + L_var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1029
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1030 if ((L_var1 > 0) && (L_var2 > 0) && (L_test < 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1031 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1032 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1033 carry_int = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1034 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1035 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1036 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1037 if ((L_var1 < 0) && (L_var2 < 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1038 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1039 if (L_test >= 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1040 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1041 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1042 carry_int = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1043 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1044 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1045 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1046 Overflow = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1047 carry_int = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1048 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1049 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1050 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1051 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1052 if (((L_var1 ^ L_var2) < 0) && (L_test >= 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1053 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1054 Overflow = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1055 carry_int = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1056 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1057 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1058 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1059 Overflow = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1060 carry_int = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1061 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1062 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1063 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1064
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1065 if (Carry)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1066 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1067 if (L_test == MAX_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1068 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1069 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1070 Carry = carry_int;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1071 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1072 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1073 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1074 if (L_test == (Word32) 0xFFFFFFFFL)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1075 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1076 Carry = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1077 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1078 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1079 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1080 Carry = carry_int;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1081 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1082 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1083 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1084 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1085 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1086 Carry = carry_int;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1087 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1088
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1089 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1090 multiCounter[currCounter].L_add_c++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1091 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1092 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1093 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1094
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1095 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1096 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1097 | Function Name : L_sub_c |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1098 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1099 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1100 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1101 | Performs 32 bits subtraction of the two 32 bits variables with carry |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1102 | (borrow) : L_var1-L_var2-C. No saturation. Generate carry and Overflow |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1103 | values. The carry and overflow values are binary variables which can |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1104 | be tested and assigned values. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1105 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1106 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1107 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1108 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1109 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1110 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1111 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1112 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1113 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1114 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1115 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1116 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1117 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1118 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1119 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1120 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1121 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1122 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1123 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1124 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1125 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1126 | Caution : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1127 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1128 | In some cases the Carry flag has to be cleared or set before using |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1129 | operators which take into account its value. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1130 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1131 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1132
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1133 Word32 L_sub_c (Word32 L_var1, Word32 L_var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1134 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1135 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1136 Word32 L_test;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1137 Flag carry_int = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1138
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1139 if (Carry)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1140 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1141 Carry = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1142 if (L_var2 != MIN_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1143 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1144 L_var_out = L_add_c (L_var1, -L_var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1145 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1146 multiCounter[currCounter].L_add_c--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1147 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1148 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1149 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1150 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1151 L_var_out = L_var1 - L_var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1152 if (L_var1 > 0L)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1153 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1154 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1155 Carry = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1156 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1157 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1158 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1159 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1160 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1161 L_var_out = L_var1 - L_var2 - (Word32) 0X00000001L;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1162 L_test = L_var1 - L_var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1163
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1164 if ((L_test < 0) && (L_var1 > 0) && (L_var2 < 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1165 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1166 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1167 carry_int = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1168 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1169 else if ((L_test > 0) && (L_var1 < 0) && (L_var2 > 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1170 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1171 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1172 carry_int = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1173 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1174 else if ((L_test > 0) && ((L_var1 ^ L_var2) > 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1175 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1176 Overflow = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1177 carry_int = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1178 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1179 if (L_test == MIN_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1180 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1181 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1182 Carry = carry_int;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1183 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1184 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1185 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1186 Carry = carry_int;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1187 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1188 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1189
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1190 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1191 multiCounter[currCounter].L_sub_c++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1192 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1193 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1194 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1195
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1196 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1197 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1198 | Function Name : L_negate |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1199 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1200 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1201 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1202 | Negate the 32 bit variable L_var1 with saturation; saturate in the case |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1203 | where input is -2147483648 (0x8000 0000). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1204 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1205 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1206 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1207 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1208 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1209 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1210 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1211 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1212 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1213 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1214 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1215 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1216 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1217 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1218 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1219 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1220 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1221 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1222 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1223
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1224 Word32 L_negate (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1225 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1226 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1227
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1228 L_var_out = (L_var1 == MIN_32) ? MAX_32 : -L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1229 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1230 multiCounter[currCounter].L_negate++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1231 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1232 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1233 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1234
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1235 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1236 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1237 | Function Name : mult_r |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1238 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1239 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1240 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1241 | Same as mult with rounding, i.e.: |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1242 | mult_r(var1,var2) = extract_l(L_shr(((var1 * var2) + 16384),15)) and |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1243 | mult_r(-32768,-32768) = 32767. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1244 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1245 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1246 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1247 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1248 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1249 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1250 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1251 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1252 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1253 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1254 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1255 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1256 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1257 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1258 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1259 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1260 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1261 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1262 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1263 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1264 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1265 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1266 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1267 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1268
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1269 Word16 mult_r (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1270 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1271 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1272 Word32 L_product_arr;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1273
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1274 L_product_arr = (Word32) var1 *(Word32) var2; /* product */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1275 L_product_arr += (Word32) 0x00004000L; /* round */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1276 L_product_arr &= (Word32) 0xffff8000L;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1277 L_product_arr >>= 15; /* shift */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1278
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1279 if (L_product_arr & (Word32) 0x00010000L) /* sign extend when necessary */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1280 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1281 L_product_arr |= (Word32) 0xffff0000L;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1282 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1283 var_out = saturate (L_product_arr);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1284 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1285 multiCounter[currCounter].mult_r++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1286 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1287 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1288 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1289
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1290 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1291 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1292 | Function Name : L_shl |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1293 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1294 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1295 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1296 | Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1297 | fill the var2 LSB of the result. If var2 is negative, arithmetically |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1298 | shift L_var1 right by -var2 with sign extension. Saturate the result in |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1299 | case of underflows or overflows. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1300 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1301 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1302 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1303 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1304 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1305 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1306 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1307 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1308 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1309 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1310 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1311 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1312 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1313 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1314 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1315 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1316 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1317 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1318 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1319 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1320 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1321 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1322 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1323
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1324 Word32 L_shl (Word32 L_var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1325 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1326 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1327
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1328 if (var2 <= 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1329 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1330 if (var2 < -32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1331 var2 = -32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1332 L_var_out = L_shr (L_var1, -var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1333 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1334 multiCounter[currCounter].L_shr--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1335 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1336 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1337 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1338 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1339 for (; var2 > 0; var2--)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1340 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1341 if (L_var1 > (Word32) 0X3fffffffL)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1342 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1343 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1344 L_var_out = MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1345 break;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1346 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1347 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1348 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1349 if (L_var1 < (Word32) 0xc0000000L)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1350 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1351 Overflow = 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1352 L_var_out = MIN_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1353 break;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1354 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1355 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1356 L_var1 *= 2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1357 L_var_out = L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1358 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1359 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1360 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1361 multiCounter[currCounter].L_shl++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1362 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1363 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1364 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1365
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1366 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1367 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1368 | Function Name : L_shr |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1369 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1370 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1371 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1372 | Arithmetically shift the 32 bit input L_var1 right var2 positions with |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1373 | sign extension. If var2 is negative, arithmetically shift L_var1 left |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1374 | by -var2 and zero fill the -var2 LSB of the result. Saturate the result |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1375 | in case of underflows or overflows. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1376 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1377 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1378 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1379 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1380 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1381 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1382 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1383 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1384 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1385 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1386 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1387 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1388 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1389 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1390 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1391 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1392 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1393 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1394 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1395 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1396 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1397 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1398 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1399
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1400 Word32 L_shr (Word32 L_var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1401 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1402 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1403
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1404 if (var2 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1405 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1406 if (var2 < -32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1407 var2 = -32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1408 L_var_out = L_shl (L_var1, -var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1409 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1410 multiCounter[currCounter].L_shl--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1411 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1412 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1413 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1414 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1415 if (var2 >= 31)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1416 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1417 L_var_out = (L_var1 < 0L) ? -1 : 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1418 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1419 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1420 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1421 if (L_var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1422 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1423 L_var_out = ~((~L_var1) >> var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1424 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1425 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1426 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1427 L_var_out = L_var1 >> var2;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1428 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1429 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1430 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1431 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1432 multiCounter[currCounter].L_shr++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1433 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1434 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1435 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1436
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1437 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1438 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1439 | Function Name : shr_r |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1440 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1441 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1442 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1443 | Same as shr(var1,var2) but with rounding. Saturate the result in case of|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1444 | underflows or overflows : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1445 | - If var2 is greater than zero : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1446 | if (sub(shl(shr(var1,var2),1),shr(var1,sub(var2,1)))) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1447 | is equal to zero |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1448 | then |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1449 | shr_r(var1,var2) = shr(var1,var2) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1450 | else |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1451 | shr_r(var1,var2) = add(shr(var1,var2),1) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1452 | - If var2 is less than or equal to zero : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1453 | shr_r(var1,var2) = shr(var1,var2). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1454 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1455 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1456 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1457 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1458 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1459 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1460 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1461 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1462 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1463 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1464 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1465 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1466 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1467 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1468 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1469 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1470 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1471 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1472 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1473 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1474 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1475 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1476 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1477 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1478
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1479 Word16 shr_r (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1480 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1481 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1482
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1483 if (var2 > 15)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1484 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1485 var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1486 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1487 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1488 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1489 var_out = shr (var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1490 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1491 multiCounter[currCounter].shr--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1492 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1493
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1494 if (var2 > 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1495 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1496 if ((var1 & ((Word16) 1 << (var2 - 1))) != 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1497 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1498 var_out++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1499 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1500 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1501 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1502 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1503 multiCounter[currCounter].shr_r++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1504 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1505 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1506 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1507
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1508 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1509 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1510 | Function Name : mac_r |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1511 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1512 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1513 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1514 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1515 | result to L_var3 with saturation. Round the LS 16 bits of the result |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1516 | into the MS 16 bits with saturation and shift the result right by 16. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1517 | Return a 16 bit result. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1518 | mac_r(L_var3,var1,var2) = round(L_mac(L_var3,var1,var2)) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1519 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1520 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1521 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1522 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1523 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1524 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1525 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1526 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1527 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1528 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1529 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1530 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1531 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1532 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1533 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1534 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1535 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1536 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1537 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1538 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1539 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1540 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1541 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1542 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1543 | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1544 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1545 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1546
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1547 Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1548 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1549 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1550
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1551 L_var3 = L_mac (L_var3, var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1552 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1553 multiCounter[currCounter].L_mac--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1554 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1555 L_var3 = L_add (L_var3, (Word32) 0x00008000L);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1556 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1557 multiCounter[currCounter].L_add--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1558 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1559 var_out = extract_h (L_var3);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1560 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1561 multiCounter[currCounter].extract_h--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1562 multiCounter[currCounter].mac_r++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1563 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1564 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1565 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1566
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1567 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1568 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1569 | Function Name : msu_r |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1570 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1571 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1572 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1573 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1574 | bit result to L_var3 with saturation. Round the LS 16 bits of the res- |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1575 | ult into the MS 16 bits with saturation and shift the result right by |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1576 | 16. Return a 16 bit result. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1577 | msu_r(L_var3,var1,var2) = round(L_msu(L_var3,var1,var2)) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1578 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1579 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1580 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1581 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1582 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1583 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1584 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1585 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1586 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1587 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1588 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1589 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1590 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1591 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1592 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1593 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1594 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1595 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1596 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1597 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1598 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1599 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1600 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1601 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1602 | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1603 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1604 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1605
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1606 Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1607 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1608 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1609
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1610 L_var3 = L_msu (L_var3, var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1611 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1612 multiCounter[currCounter].L_msu--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1613 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1614 L_var3 = L_add (L_var3, (Word32) 0x00008000L);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1615 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1616 multiCounter[currCounter].L_add--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1617 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1618 var_out = extract_h (L_var3);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1619 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1620 multiCounter[currCounter].extract_h--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1621 multiCounter[currCounter].msu_r++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1622 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1623 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1624 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1625
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1626 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1627 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1628 | Function Name : L_deposit_h |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1629 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1630 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1631 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1632 | Deposit the 16 bit var1 into the 16 MS bits of the 32 bit output. The |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1633 | 16 LS bits of the output are zeroed. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1634 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1635 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1636 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1637 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1638 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1639 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1640 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1641 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1642 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1643 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1644 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1645 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1646 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1647 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1648 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1649 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1650 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1651 | range : 0x8000 0000 <= var_out <= 0x7fff 0000. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1652 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1653 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1654
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1655 Word32 L_deposit_h (Word16 var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1656 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1657 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1658
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1659 L_var_out = (Word32) var1 << 16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1660 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1661 multiCounter[currCounter].L_deposit_h++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1662 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1663 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1664 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1665
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1666 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1667 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1668 | Function Name : L_deposit_l |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1669 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1670 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1671 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1672 | Deposit the 16 bit var1 into the 16 LS bits of the 32 bit output. The |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1673 | 16 MS bits of the output are sign extended. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1674 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1675 | Complexity weight : 2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1676 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1677 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1678 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1679 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1680 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1681 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1682 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1683 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1684 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1685 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1686 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1687 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1688 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1689 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1690 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1691 | range : 0xFFFF 8000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1692 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1693 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1694
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1695 Word32 L_deposit_l (Word16 var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1696 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1697 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1698
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1699 L_var_out = (Word32) var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1700 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1701 multiCounter[currCounter].L_deposit_l++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1702 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1703 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1704 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1705
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1706 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1707 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1708 | Function Name : L_shr_r |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1709 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1710 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1711 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1712 | Same as L_shr(L_var1,var2) but with rounding. Saturate the result in |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1713 | case of underflows or overflows : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1714 | - If var2 is greater than zero : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1715 | if (L_sub(L_shl(L_shr(L_var1,var2),1),L_shr(L_var1,sub(var2,1))))|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1716 | is equal to zero |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1717 | then |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1718 | L_shr_r(L_var1,var2) = L_shr(L_var1,var2) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1719 | else |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1720 | L_shr_r(L_var1,var2) = L_add(L_shr(L_var1,var2),1) |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1721 | - If var2 is less than or equal to zero : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1722 | L_shr_r(L_var1,var2) = L_shr(L_var1,var2). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1723 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1724 | Complexity weight : 3 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1725 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1726 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1727 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1728 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1729 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1730 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1731 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1732 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1733 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1734 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1735 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1736 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1737 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1738 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1739 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1740 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1741 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1742 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1743 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1744 | range : 0x8000 0000 <= var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1745 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1746 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1747
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1748 Word32 L_shr_r (Word32 L_var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1749 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1750 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1751
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1752 if (var2 > 31)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1753 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1754 L_var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1755 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1756 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1757 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1758 L_var_out = L_shr (L_var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1759 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1760 multiCounter[currCounter].L_shr--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1761 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1762 if (var2 > 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1763 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1764 if ((L_var1 & ((Word32) 1 << (var2 - 1))) != 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1765 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1766 L_var_out++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1767 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1768 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1769 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1770 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1771 multiCounter[currCounter].L_shr_r++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1772 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1773 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1774 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1775
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1776 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1777 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1778 | Function Name : L_abs |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1779 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1780 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1781 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1782 | Absolute value of L_var1; Saturate in case where the input is |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1783 | -214783648 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1784 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1785 | Complexity weight : 3 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1786 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1787 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1788 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1789 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1790 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1791 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1792 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1793 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1794 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1795 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1796 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1797 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1798 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1799 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1800 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1801 | range : 0x0000 0000 <= var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1802 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1803 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1804
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1805 Word32 L_abs (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1806 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1807 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1808
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1809 if (L_var1 == MIN_32)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1810 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1811 L_var_out = MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1812 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1813 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1814 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1815 if (L_var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1816 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1817 L_var_out = -L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1818 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1819 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1820 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1821 L_var_out = L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1822 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1823 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1824
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1825 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1826 multiCounter[currCounter].L_abs++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1827 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1828 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1829 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1830
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1831 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1832 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1833 | Function Name : L_sat |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1834 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1835 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1836 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1837 | 32 bit L_var1 is set to 2147483647 if an overflow occured or to |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1838 | -2147483648 if an underflow occured on the most recent L_add_c, |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1839 | L_sub_c, L_macNs or L_msuNs operations. The carry and overflow values |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1840 | are binary values which can be tested and assigned values. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1841 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1842 | Complexity weight : 4 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1843 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1844 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1845 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1846 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1847 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1848 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1849 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1850 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1851 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1852 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1853 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1854 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1855 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1856 | L_var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1857 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1858 | range : 0x8000 0000 <= var_out <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1859 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1860 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1861
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1862 Word32 L_sat (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1863 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1864 Word32 L_var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1865
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1866 L_var_out = L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1867
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1868 if (Overflow)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1869 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1870
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1871 if (Carry)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1872 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1873 L_var_out = MIN_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1874 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1875 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1876 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1877 L_var_out = MAX_32;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1878 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1879
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1880 Carry = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1881 Overflow = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1882 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1883 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1884 multiCounter[currCounter].L_sat++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1885 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1886 return (L_var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1887 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1888
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1889 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1890 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1891 | Function Name : norm_s |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1892 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1893 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1894 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1895 | Produces the number of left shift needed to normalize the 16 bit varia- |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1896 | ble var1 for positive values on the interval with minimum of 16384 and |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1897 | maximum of 32767, and for negative values on the interval with minimum |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1898 | of -32768 and maximum of -16384; in order to normalize the result, the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1899 | following operation must be done : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1900 | norm_var1 = shl(var1,norm_s(var1)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1901 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1902 | Complexity weight : 15 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1903 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1904 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1905 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1906 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1907 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1908 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1909 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1910 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1911 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1912 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1913 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1914 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1915 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1916 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1917 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1918 | range : 0x0000 0000 <= var_out <= 0x0000 000f. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1919 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1920 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1921
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1922 Word16 norm_s (Word16 var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1923 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1924 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1925
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1926 if (var1 == 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1927 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1928 var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1929 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1930 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1931 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1932 if (var1 == (Word16) 0xffff)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1933 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1934 var_out = 15;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1935 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1936 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1937 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1938 if (var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1939 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1940 var1 = ~var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1941 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1942 for (var_out = 0; var1 < 0x4000; var_out++)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1943 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1944 var1 <<= 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1945 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1946 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1947 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1948
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1949 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1950 multiCounter[currCounter].norm_s++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1951 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1952 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1953 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1954
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1955 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1956 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1957 | Function Name : div_s |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1958 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1959 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1960 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1961 | Produces a result which is the fractional integer division of var1 by |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1962 | var2; var1 and var2 must be positive and var2 must be greater or equal |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1963 | to var1; the result is positive (leading bit equal to 0) and truncated |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1964 | to 16 bits. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1965 | If var1 = var2 then div(var1,var2) = 32767. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1966 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1967 | Complexity weight : 18 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1968 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1969 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1970 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1971 | var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1972 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1973 | range : 0x0000 0000 <= var1 <= var2 and var2 != 0. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1974 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1975 | var2 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1976 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1977 | range : var1 <= var2 <= 0x0000 7fff and var2 != 0. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1978 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1979 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1980 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1981 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1982 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1983 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1984 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1985 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1986 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1987 | range : 0x0000 0000 <= var_out <= 0x0000 7fff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1988 | It's a Q15 value (point between b15 and b14). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1989 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1990 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1991
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1992 Word16 div_s (Word16 var1, Word16 var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1993 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1994 Word16 var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1995 Word16 iteration;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1996 Word32 L_num;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1997 Word32 L_denom;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1998
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1999 #if 0
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2000 if ((var1 > var2) || (var1 < 0) || (var2 < 0))
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2001 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2002 printf ("Division Error var1=%d var2=%d\n", var1, var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2003 abort(); /* exit (0); */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2004 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2005 if (var2 == 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2006 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2007 printf ("Division by 0, Fatal error \n");
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2008 abort(); /* exit (0); */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2009 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2010 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2011 if (var1 == 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2012 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2013 var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2014 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2015 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2016 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2017 if (var1 == var2)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2018 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2019 var_out = MAX_16;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2020 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2021 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2022 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2023 L_num = L_deposit_l (var1);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2024 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2025 multiCounter[currCounter].L_deposit_l--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2026 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2027 L_denom = L_deposit_l (var2);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2028 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2029 multiCounter[currCounter].L_deposit_l--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2030 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2031
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2032 for (iteration = 0; iteration < 15; iteration++)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2033 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2034 var_out <<= 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2035 L_num <<= 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2036
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2037 if (L_num >= L_denom)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2038 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2039 L_num = L_sub (L_num, L_denom);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2040 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2041 multiCounter[currCounter].L_sub--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2042 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2043 var_out = add (var_out, 1);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2044 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2045 multiCounter[currCounter].add--;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2046 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2047 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2048 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2049 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2050 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2051
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2052 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2053 multiCounter[currCounter].div_s++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2054 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2055 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2056 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2057
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2058 /*___________________________________________________________________________
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2059 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2060 | Function Name : norm_l |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2061 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2062 | Purpose : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2063 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2064 | Produces the number of left shifts needed to normalize the 32 bit varia-|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2065 | ble L_var1 for positive values on the interval with minimum of |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2066 | 1073741824 and maximum of 2147483647, and for negative values on the in-|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2067 | terval with minimum of -2147483648 and maximum of -1073741824; in order |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2068 | to normalize the result, the following operation must be done : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2069 | norm_L_var1 = L_shl(L_var1,norm_l(L_var1)). |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2070 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2071 | Complexity weight : 30 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2072 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2073 | Inputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2074 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2075 | L_var1 |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2076 | 32 bit long signed integer (Word32) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2077 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2078 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2079 | Outputs : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2080 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2081 | none |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2082 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2083 | Return Value : |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2084 | |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2085 | var_out |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2086 | 16 bit short signed integer (Word16) whose value falls in the |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2087 | range : 0x0000 0000 <= var_out <= 0x0000 001f. |
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2088 |___________________________________________________________________________|
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2089 */
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2090
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2091 Word16 norm_l (Word32 L_var1)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2092 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2093 Word16 var_out;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2094
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2095 if (L_var1 == 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2096 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2097 var_out = 0;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2098 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2099 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2100 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2101 if (L_var1 == (Word32) 0xffffffffL)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2102 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2103 var_out = 31;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2104 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2105 else
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2106 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2107 if (L_var1 < 0)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2108 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2109 L_var1 = ~L_var1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2110 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2111 for (var_out = 0; L_var1 < (Word32) 0x40000000L; var_out++)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2112 {
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2113 L_var1 <<= 1;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2114 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2115 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2116 }
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2117
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2118 #if (WMOPS)
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2119 multiCounter[currCounter].norm_l++;
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2120 #endif
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2121 return (var_out);
57b4053559ff libtwamr: beginning of project
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2122 }