FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/basic_op.h @ 350:9b05bbc23b8a

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libgsmefr inline: make shift count guards 100% robust
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 Apr 2024 05:34:54 +0000
parents ed8762eea8a1
children
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1 /*
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2 * This version of basic_op.h for GSM-EFR codec has been created at
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3 * Themyscira Wireless with the aim of performance improvement.
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4 * The original version contained only function declarations,
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5 * resulting in a function call for every elementary operation;
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6 * the present version implements most of these operations as inline
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7 * functions. (Further update: for extra speed-up, some inline
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8 * function implementations have been lifted from PacketVideo AMR
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9 * version, aka libopencore-amrnb.)
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10 *
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11 * Elimination of Overflow flag: examination of EFR code reveals that
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12 * both Carry and Overflow flags are accessed outside of basicop2.c
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13 * only in g_pitch.c, as part of a code sequence that uses L_macNs.
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14 * Since the Overflow flag is not checked anywhere else, we can eliminate
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15 * its setting from all other elementary operation functions, saving
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16 * some cycles and code size.
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17 *
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18 * Non-portability: we assume real target machines, not hypothetical
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19 * ones. Specifically, we assume that >> does an arithmetic right shift
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20 * (sign bit fill).
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21 */
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22
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23 /* for the few functions that still use them */
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24 extern __thread Flag Overflow;
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25 extern __thread Flag Carry;
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26
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27 #define MAX_32 (Word32)0x7fffffff
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28 #define MIN_32 (Word32)0x80000000
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29
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30 #define MAX_16 (Word16)0x7fff
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31 #define MIN_16 (Word16)0x8000
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32
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33 /* likely and unlikely conditional paths */
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34
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35 #define likely(x) __builtin_expect(!!(x), 1)
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36 #define unlikely(x) __builtin_expect(!!(x), 0)
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37
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38 /* Word16 operations */
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39
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40 /*___________________________________________________________________________
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41 | |
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42 | Function Name : add |
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43 | |
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44 | Purpose : |
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45 | |
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46 | Performs the addition (var1+var2) with overflow control and saturation;|
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47 | the 16 bit result is set at +32767 when overflow occurs or at -32768 |
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48 | when underflow occurs. |
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49 | |
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50 | Complexity weight : 1 |
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51 | |
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52 | Inputs : |
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53 | |
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54 | var1 |
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55 | 16 bit short signed integer (Word16) whose value falls in the |
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56 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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57 | |
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58 | var2 |
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59 | 16 bit short signed integer (Word16) whose value falls in the |
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60 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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61 | |
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62 | Outputs : |
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63 | |
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64 | none |
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65 | |
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66 | Return Value : |
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67 | |
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68 | var_out |
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69 | 16 bit short signed integer (Word16) whose value falls in the |
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70 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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71 |___________________________________________________________________________|
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72 */
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73
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74 static inline Word16 add (Word16 var1, Word16 var2)
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75 {
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76 Word32 L_sum;
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77
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78 L_sum = (Word32) var1 + var2;
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79 if (unlikely(L_sum > MAX_16))
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80 return MAX_16;
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81 else if (unlikely(L_sum < MIN_16))
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82 return MIN_16;
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83 else
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84 return L_sum;
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85 }
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86
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87 /*___________________________________________________________________________
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88 | |
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89 | Function Name : sub |
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90 | |
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91 | Purpose : |
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92 | |
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93 | Performs the subtraction (var1+var2) with overflow control and satu- |
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94 | ration; the 16 bit result is set at +32767 when overflow occurs or at |
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95 | -32768 when underflow occurs. |
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96 | |
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97 | Complexity weight : 1 |
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98 | |
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99 | Inputs : |
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100 | |
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101 | var1 |
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102 | 16 bit short signed integer (Word16) whose value falls in the |
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103 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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104 | |
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105 | var2 |
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106 | 16 bit short signed integer (Word16) whose value falls in the |
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107 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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108 | |
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109 | Outputs : |
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110 | |
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111 | none |
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112 | |
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113 | Return Value : |
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114 | |
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115 | var_out |
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116 | 16 bit short signed integer (Word16) whose value falls in the |
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117 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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118 |___________________________________________________________________________|
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119 */
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120
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121 static inline Word16 sub (Word16 var1, Word16 var2)
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122 {
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123 Word32 L_diff;
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124
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125 L_diff = (Word32) var1 - var2;
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126 if (unlikely(L_diff > MAX_16))
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127 return MAX_16;
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128 else if (unlikely(L_diff < MIN_16))
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129 return MIN_16;
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130 else
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131 return L_diff;
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132 }
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133
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134 /*___________________________________________________________________________
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135 | |
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136 | Function Name : abs_s |
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137 | |
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138 | Purpose : |
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139 | |
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140 | Absolute value of var1; abs_s(-32768) = 32767. |
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141 | |
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142 | Complexity weight : 1 |
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143 | |
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144 | Inputs : |
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145 | |
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146 | var1 |
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147 | 16 bit short signed integer (Word16) whose value falls in the |
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148 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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149 | |
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150 | Outputs : |
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151 | |
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152 | none |
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153 | |
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154 | Return Value : |
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155 | |
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156 | var_out |
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157 | 16 bit short signed integer (Word16) whose value falls in the |
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158 | range : 0x0000 0000 <= var_out <= 0x0000 7fff. |
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159 |___________________________________________________________________________|
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160 */
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161
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162 static inline Word16 abs_s (Word16 var1)
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163 {
349
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164 Word16 y = var1 - (var1 < 0);
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165 y = y ^ (y >> 15);
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166 return (y);
347
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167 }
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168
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169 /*___________________________________________________________________________
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170 | |
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171 | Function Name : shl |
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172 | |
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173 | Purpose : |
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174 | |
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175 | Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill|
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176 | the var2 LSB of the result. If var2 is negative, arithmetically shift |
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177 | var1 right by -var2 with sign extension. Saturate the result in case of |
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178 | underflows or overflows. |
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179 | |
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180 | Complexity weight : 1 |
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181 | |
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182 | Inputs : |
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183 | |
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184 | var1 |
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185 | 16 bit short signed integer (Word16) whose value falls in the |
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186 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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187 | |
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188 | var2 |
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189 | 16 bit short signed integer (Word16) whose value falls in the |
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190 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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191 | |
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192 | Outputs : |
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193 | |
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194 | none |
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195 | |
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196 | Return Value : |
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197 | |
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198 | var_out |
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199 | 16 bit short signed integer (Word16) whose value falls in the |
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200 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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201 |___________________________________________________________________________|
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202 */
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203
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204 static inline Word16 shl (Word16 var1, Word16 var2)
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205 {
349
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206 Word16 var_out;
347
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207
349
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208 if (unlikely(var2 < 0)) {
350
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209 if (unlikely(var2 < -15))
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210 var2 = -15;
347
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211 var2 = -var2;
349
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212 var_out = var1 >> var2;
347
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213 } else {
349
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214 if (unlikely(var2 > 15))
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215 var2 = 15;
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216 var_out = var1 << var2;
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217 if (unlikely(var_out >> var2 != var1))
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218 {
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219 var_out = (var1 >> 15) ^ MAX_16;
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220 }
347
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221 }
349
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222 return var_out;
347
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223 }
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224
38
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225 /*___________________________________________________________________________
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226 | |
347
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227 | Function Name : shr |
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228 | |
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229 | Purpose : |
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230 | |
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231 | Arithmetically shift the 16 bit input var1 right var2 positions with |
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232 | sign extension. If var2 is negative, arithmetically shift var1 left by |
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233 | -var2 with sign extension. Saturate the result in case of underflows or |
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234 | overflows. |
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235 | |
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236 | Complexity weight : 1 |
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237 | |
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238 | Inputs : |
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239 | |
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240 | var1 |
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241 | 16 bit short signed integer (Word16) whose value falls in the |
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242 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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243 | |
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244 | var2 |
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245 | 16 bit short signed integer (Word16) whose value falls in the |
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246 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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247 | |
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248 | Outputs : |
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249 | |
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250 | none |
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251 | |
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252 | Return Value : |
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253 | |
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254 | var_out |
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255 | 16 bit short signed integer (Word16) whose value falls in the |
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256 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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257 |___________________________________________________________________________|
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258 */
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259
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260 static inline Word16 shr (Word16 var1, Word16 var2)
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261 {
349
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262 Word16 var_out;
347
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263
349
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264 if (unlikely(var2 < 0)) {
350
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265 if (unlikely(var2 < -15))
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266 var2 = -15;
347
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267 var2 = -var2;
349
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268 var_out = var1 << var2;
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269 if (unlikely(var_out >> var2 != var1))
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270 {
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271 var_out = (var1 >> 15) ^ MAX_16;
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272 }
347
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273 } else {
349
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274 if (unlikely(var2 > 15))
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275 var2 = 15;
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276 var_out = var1 >> var2;
347
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277 }
349
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278 return var_out;
347
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279 }
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280
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281 /*___________________________________________________________________________
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282 | |
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283 | Function Name : mult |
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284 | |
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285 | Purpose : |
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286 | |
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287 | Performs the multiplication of var1 by var2 and gives a 16 bit result |
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288 | which is scaled i.e.: |
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289 | mult(var1,var2) = extract_l(L_shr((var1 times var2),15)) and |
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290 | mult(-32768,-32768) = 32767. |
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291 | |
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292 | Complexity weight : 1 |
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293 | |
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294 | Inputs : |
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295 | |
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296 | var1 |
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297 | 16 bit short signed integer (Word16) whose value falls in the |
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298 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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299 | |
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300 | var2 |
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301 | 16 bit short signed integer (Word16) whose value falls in the |
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302 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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303 | |
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304 | Outputs : |
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305 | |
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306 | none |
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307 | |
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308 | Return Value : |
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309 | |
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310 | var_out |
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311 | 16 bit short signed integer (Word16) whose value falls in the |
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312 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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313 |___________________________________________________________________________|
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314 */
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315
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316 static inline Word16 mult (Word16 var1, Word16 var2)
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317 {
349
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318 register Word32 product;
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319
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320 product = ((Word32) var1 * var2) >> 15;
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321
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322 /* Saturate result (if necessary). */
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323 /* var1 * var2 >0x00007fff is the only case */
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324 /* that saturation occurs. */
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325
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326 if (unlikely(product > 0x00007fff))
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327 product = (Word32) MAX_16;
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328
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329 /* Return the product as a 16 bit value by type casting Word32 to Word16 */
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330
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331 return ((Word16) product);
347
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332 }
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333
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334 /*___________________________________________________________________________
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335 | |
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336 | Function Name : negate |
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337 | |
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338 | Purpose : |
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339 | |
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340 | Negate var1 with saturation, saturate in the case where input is -32768:|
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341 | negate(var1) = sub(0,var1). |
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342 | |
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343 | Complexity weight : 1 |
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344 | |
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345 | Inputs : |
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346 | |
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347 | var1 |
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348 | 16 bit short signed integer (Word16) whose value falls in the |
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349 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
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350 | |
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351 | Outputs : |
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352 | |
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353 | none |
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354 | |
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355 | Return Value : |
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356 | |
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357 | var_out |
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358 | 16 bit short signed integer (Word16) whose value falls in the |
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359 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
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360 |___________________________________________________________________________|
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361 */
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362
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363 static inline Word16 negate (Word16 var1)
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364 {
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365 Word16 var_out;
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366
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367 var_out = (var1 == MIN_16) ? MAX_16 : -var1;
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368 return (var_out);
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369 }
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370
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371 /*___________________________________________________________________________
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diff changeset
372 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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373 | Function Name : extract_h |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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374 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
375 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
376 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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377 | Return the 16 MSB of L_var1. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
378 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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379 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
380 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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381 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
382 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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383 | L_var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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384 | 32 bit long signed integer (Word32 ) whose value falls in the |
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385 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
386 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
387 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
388 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
389 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
390 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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391 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
392 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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393 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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394 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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395 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
396 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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397 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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398
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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399 static inline Word16 extract_h (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
400 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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401 Word16 var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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402
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
403 var_out = (Word16) (L_var1 >> 16);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
404 return (var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
405 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
406
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
407 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
408 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
409 | Function Name : extract_l |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
410 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
411 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
412 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
413 | Return the 16 LSB of L_var1. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
414 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
415 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
416 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
417 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
418 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
419 | L_var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
420 | 32 bit long signed integer (Word32 ) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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421 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
422 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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423 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
424 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
425 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
426 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
427 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
428 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
429 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
430 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
431 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
432 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
433 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
434
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
435 static inline Word16 extract_l (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
436 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
437 Word16 var_out;
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diff changeset
438
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
439 var_out = (Word16) L_var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
440 return (var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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441 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
442
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
443 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
444 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
445 | Function Name : round |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
446 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
447 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
448 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
449 | Round the lower 16 bits of the 32 bit input number into the MS 16 bits |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
450 | with saturation. Shift the resulting bits right by 16 and return the 16 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
451 | bit number: |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
452 | round(L_var1) = extract_h(L_add(L_var1,32768)) |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
453 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
454 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
455 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
456 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
457 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
458 | L_var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
459 | 32 bit long signed integer (Word32 ) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
460 | range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
461 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
462 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
463 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
464 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
465 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
466 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
467 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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parents: 38
diff changeset
468 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
469 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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parents: 38
diff changeset
470 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
471 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
472 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
473
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
474 static inline Word16 round (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
475 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
476 if (unlikely(L_var1 >= 0x7fff8000))
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
477 return MAX_16;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
478 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
479 return (L_var1 + 0x8000) >> 16;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
480 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
481
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
482 /* Word32 operations */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
483
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
484 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
485 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
486 | Function Name : L_add |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
487 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
488 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
489 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
490 | 32 bits addition of the two 32 bits variables (L_var1+L_var2) with |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
491 | overflow control and saturation; the result is set at +2147483647 when |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
492 | overflow occurs or at -2147483648 when underflow occurs. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
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diff changeset
493 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
494 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
495 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
496 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
497 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
498 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
499 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
500 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
501 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
502 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
503 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
504 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
505 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
506 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
507 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
508 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
509 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
510 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
511 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
512 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
513 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
514 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
515
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
516 static inline Word32 L_add (Word32 L_var1, Word32 L_var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
517 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
518 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
519
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
520 L_var_out = L_var1 + L_var2;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
521
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
522 if (((L_var1 ^ L_var2) & MIN_32) == 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
523 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
524 if ((L_var_out ^ L_var1) & MIN_32)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
525 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
526 L_var_out = (L_var1 < 0) ? MIN_32 : MAX_32;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
527 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
528 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
529 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
530 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
531
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
532 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
533 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
534 | Function Name : L_sub |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
535 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
536 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
537 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
538 | 32 bits subtraction of the two 32 bits variables (L_var1-L_var2) with |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
539 | overflow control and saturation; the result is set at +2147483647 when |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
540 | overflow occurs or at -2147483648 when underflow occurs. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
541 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
542 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
543 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
544 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
545 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
546 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
547 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
548 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
549 | L_var2 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
550 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
551 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
552 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
553 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
554 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
555 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
556 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
557 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
558 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
559 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
560 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
38
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 |___________________________________________________________________________|
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
564 static inline Word32 L_sub (Word32 L_var1, Word32 L_var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
565 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
566 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
567
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
568 L_var_out = L_var1 - L_var2;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
569
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
570 if (((L_var1 ^ L_var2) & MIN_32) != 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
571 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
572 if ((L_var_out ^ L_var1) & MIN_32)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
573 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
574 L_var_out = (L_var1 < 0) ? MIN_32 : MAX_32;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
575 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
576 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
577 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
578 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
579
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
580 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
581 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
582 | Function Name : L_mult |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
583 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
584 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
585 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
586 | L_mult is the 32 bit result of the multiplication of var1 times var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
587 | with one shift left i.e.: |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
588 | L_mult(var1,var2) = L_shl((var1 times var2),1) and |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
589 | L_mult(-32768,-32768) = 2147483647. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
590 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
591 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
592 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
593 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
594 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
595 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
596 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
597 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
598 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
599 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
600 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
601 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
602 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
603 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
604 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
605 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
606 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
607 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
608 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
609 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
610 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
611 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
612 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
613 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
614
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
615 static inline Word32 L_mult (Word16 var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
616 {
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
617 register Word32 L_product;
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
618
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
619 L_product = (Word32) var1 * var2;
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
620
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
621 if (likely(L_product != (Word32) 0x40000000))
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
622 {
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
623 L_product <<= 1; /* Multiply by 2 */
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
624 }
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
625 else
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
626 {
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
627 Overflow = 1;
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
628 L_product = MAX_32;
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
629 }
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
630
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
631 return (L_product);
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
632 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
633
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
634 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
635 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
636 | Function Name : L_mac |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
637 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
638 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
639 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
640 | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
641 | result to L_var3 with saturation, return a 32 bit result: |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
642 | L_mac(L_var3,var1,var2) = L_add(L_var3,L_mult(var1,var2)). |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
643 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
644 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
645 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
646 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
647 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
648 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
649 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
650 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
651 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
652 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
653 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
654 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
655 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
656 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
657 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
658 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
659 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
660 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
661 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
662 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
663 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
664 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
665 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
666 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
667 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
668 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
669 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
670
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
671 static inline Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
672 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
673 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
674 Word32 L_product;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
675
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
676 L_product = L_mult (var1, var2);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
677 L_var_out = L_add (L_var3, L_product);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
678 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
679 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
680
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
681 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
682 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
683 | Function Name : L_msu |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
684 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
685 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
686 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
687 | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
688 | bit result to L_var3 with saturation, return a 32 bit result: |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
689 | L_msu(L_var3,var1,var2) = L_sub(L_var3,L_mult(var1,var2)). |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
690 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
691 | Complexity weight : 1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
692 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
693 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
694 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
695 | L_var3 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
696 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
697 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
698 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
699 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
700 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
701 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
702 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
703 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
704 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
705 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
706 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
707 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
708 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
709 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
710 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
711 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
712 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
713 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
714 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
715 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
716 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
717
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
718 static inline Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
719 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
720 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
721 Word32 L_product;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
722
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
723 L_product = L_mult (var1, var2);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
724 L_var_out = L_sub (L_var3, L_product);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
725 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
726 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
727
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
728 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
729 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
730 | Function Name : L_negate |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
731 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
732 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
733 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
734 | Negate the 32 bit variable L_var1 with saturation; saturate in the case |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
735 | where input is -2147483648 (0x8000 0000). |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
736 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
737 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
738 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
739 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
740 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
741 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
742 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
743 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
744 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
745 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
746 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
747 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
748 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
749 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
750 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
751 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
752 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
753 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
754 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
755
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
756 static inline Word32 L_negate (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
757 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
758 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
759
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
760 L_var_out = (L_var1 == MIN_32) ? MAX_32 : -L_var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
761 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
762 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
763
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
764 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
765 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
766 | Function Name : L_shl |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
767 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
768 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
769 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
770 | Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
771 | fill the var2 LSB of the result. If var2 is negative, arithmetically |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
772 | shift L_var1 right by -var2 with sign extension. Saturate the result in |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
773 | case of underflows or overflows. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
774 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
775 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
776 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
777 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
778 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
779 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
780 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
781 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
782 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
783 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
784 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
785 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
786 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
787 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
788 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
789 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
790 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
791 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
792 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
793 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
794 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
795 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
796 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
797
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
798 static inline Word32 L_shl (Word32 L_var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
799 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
800 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
801
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
802 if (unlikely(var2 < 0)) {
350
9b05bbc23b8a libgsmefr inline: make shift count guards 100% robust
Mychaela Falconia <falcon@freecalypso.org>
parents: 349
diff changeset
803 if (unlikely(var2 < -31))
9b05bbc23b8a libgsmefr inline: make shift count guards 100% robust
Mychaela Falconia <falcon@freecalypso.org>
parents: 349
diff changeset
804 var2 = -31;
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
805 var2 = -var2;
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
806 L_var_out = L_var1 >> var2;
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
807 } else {
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
808 if (unlikely(var2 > 31))
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
809 var2 = 31;
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
810 L_var_out = L_var1 << var2;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
811 if (unlikely(L_var_out >> var2 != L_var1))
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
812 L_var_out = (L_var1 >> 31) ^ MAX_32;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
813 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
814 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
815 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
816
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
817 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
818 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
819 | Function Name : L_shr |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
820 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
821 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
822 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
823 | Arithmetically shift the 32 bit input L_var1 right var2 positions with |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
824 | sign extension. If var2 is negative, arithmetically shift L_var1 left |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
825 | by -var2 and zero fill the -var2 LSB of the result. Saturate the result |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
826 | in case of underflows or overflows. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
827 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
828 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
829 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
830 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
831 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
832 | L_var1 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
833 | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
834 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
835 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
836 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
837 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
838 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
839 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
840 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
841 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
842 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
843 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
844 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
845 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
846 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
847 | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
848 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
849 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
850
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
851 static inline Word32 L_shr (Word32 L_var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
852 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
853 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
854
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
855 if (unlikely(var2 < 0)) {
350
9b05bbc23b8a libgsmefr inline: make shift count guards 100% robust
Mychaela Falconia <falcon@freecalypso.org>
parents: 349
diff changeset
856 if (unlikely(var2 < -31))
9b05bbc23b8a libgsmefr inline: make shift count guards 100% robust
Mychaela Falconia <falcon@freecalypso.org>
parents: 349
diff changeset
857 var2 = -31;
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
858 var2 = -var2;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
859 L_var_out = L_var1 << var2;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
860 if (unlikely(L_var_out >> var2 != L_var1))
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
861 L_var_out = (L_var1 >> 31) ^ MAX_32;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
862 } else {
349
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
863 if (unlikely(var2 > 31))
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
864 var2 = 31;
ed8762eea8a1 libgsmefr: use some inline functions from PacketVideo
Mychaela Falconia <falcon@freecalypso.org>
parents: 347
diff changeset
865 L_var_out = L_var1 >> var2;
347
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
866 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
867 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
868 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
869
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
870 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
871 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
872 | Function Name : L_deposit_h |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
873 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
874 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
875 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
876 | Deposit the 16 bit var1 into the 16 MS bits of the 32 bit output. The |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
877 | 16 LS bits of the output are zeroed. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
878 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
879 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
880 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
881 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
882 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
883 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
884 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
885 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
886 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
887 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
888 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
889 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
890 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
891 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
892 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
893 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
894 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
895 | range : 0x8000 0000 <= var_out <= 0x7fff 0000. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
896 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
897 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
898
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
899 static inline Word32 L_deposit_h (Word16 var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
900 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
901 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
902
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
903 L_var_out = (Word32) var1 << 16;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
904 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
905 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
906
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
907 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
908 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
909 | Function Name : L_deposit_l |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
910 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
911 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
912 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
913 | Deposit the 16 bit var1 into the 16 LS bits of the 32 bit output. The |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
914 | 16 MS bits of the output are sign extended. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
915 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
916 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
917 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
918 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
919 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
920 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
921 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
922 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
923 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
924 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
925 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
926 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
927 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
928 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
929 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
930 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
931 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
932 | range : 0xFFFF 8000 <= var_out <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
933 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
934 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
935
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
936 static inline Word32 L_deposit_l (Word16 var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
937 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
938 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
939
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
940 L_var_out = (Word32) var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
941 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
942 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
943
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
944 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
945 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
946 | Function Name : L_abs |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
947 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
948 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
949 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
950 | Absolute value of L_var1; Saturate in case where the input is |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
951 | -214783648 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
952 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
953 | Complexity weight : 3 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
954 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
955 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
956 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
957 | L_var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
958 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
959 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
960 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
961 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
962 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
963 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
964 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
965 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
966 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
967 | L_var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
968 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
969 | range : 0x0000 0000 <= var_out <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
970 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
971 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
972
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
973 static inline Word32 L_abs (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
974 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
975 Word32 L_var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
976
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
977 if (L_var1 == MIN_32)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
978 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
979 L_var_out = MAX_32;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
980 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
981 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
982 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
983 if (L_var1 < 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
984 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
985 L_var_out = -L_var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
986 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
987 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
988 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
989 L_var_out = L_var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
990 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
991 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
992
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
993 return (L_var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
994 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
995
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
996 /* additional ops */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
997
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
998 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
999 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1000 | Function Name : mult_r |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1001 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1002 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1003 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1004 | Same as mult with rounding, i.e.: |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1005 | mult_r(var1,var2) = extract_l(L_shr(((var1 * var2) + 16384),15)) and |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1006 | mult_r(-32768,-32768) = 32767. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1007 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1008 | Complexity weight : 2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1009 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1010 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1011 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1012 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1013 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1014 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1015 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1016 | var2 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1017 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1018 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1019 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1020 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1021 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1022 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1023 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1024 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1025 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1026 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1027 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1028 | range : 0xffff 8000 <= var_out <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1029 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1030 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1031
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1032 static inline Word16 mult_r (Word16 var1, Word16 var2)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1033 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1034 Word16 var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1035 Word32 L_product_arr;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1036
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1037 L_product_arr = (Word32) var1 *(Word32) var2; /* product */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1038 L_product_arr += (Word32) 0x00004000L; /* round */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1039 L_product_arr &= (Word32) 0xffff8000L;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1040 L_product_arr >>= 15; /* shift */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1041
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1042 if (unlikely(L_product_arr > MAX_16))
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1043 return MAX_16;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1044 else if (unlikely(L_product_arr < MIN_16))
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1045 return MIN_16;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1046 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1047 return L_product_arr;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1048 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1049
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1050 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1051 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1052 | Function Name : norm_s |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1053 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1054 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1055 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1056 | Produces the number of left shift needed to normalize the 16 bit varia- |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1057 | ble var1 for positive values on the interval with minimum of 16384 and |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1058 | maximum of 32767, and for negative values on the interval with minimum |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1059 | of -32768 and maximum of -16384; in order to normalize the result, the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1060 | following operation must be done : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1061 | norm_var1 = shl(var1,norm_s(var1)). |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1062 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1063 | Complexity weight : 15 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1064 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1065 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1066 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1067 | var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1068 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1069 | range : 0xffff 8000 <= var1 <= 0x0000 7fff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1070 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1071 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1072 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1073 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1074 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1075 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1076 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1077 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1078 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1079 | range : 0x0000 0000 <= var_out <= 0x0000 000f. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1080 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1081 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1082
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1083 static inline Word16 norm_s (Word16 var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1084 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1085 Word16 var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1086
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1087 if (var1 == 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1088 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1089 var_out = 0;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1090 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1091 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1092 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1093 if (var1 == (Word16) 0xffff)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1094 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1095 var_out = 15;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1096 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1097 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1098 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1099 if (var1 < 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1100 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1101 var1 = ~var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1102 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1103 for (var_out = 0; var1 < 0x4000; var_out++)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1104 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1105 var1 <<= 1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1106 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1107 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1108 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1109
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1110 return (var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1111 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1112
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1113 /*___________________________________________________________________________
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1114 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1115 | Function Name : norm_l |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1116 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1117 | Purpose : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1118 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1119 | Produces the number of left shifts needed to normalize the 32 bit varia-|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1120 | ble L_var1 for positive values on the interval with minimum of |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1121 | 1073741824 and maximum of 2147483647, and for negative values on the in-|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1122 | terval with minimum of -2147483648 and maximum of -1073741824; in order |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1123 | to normalize the result, the following operation must be done : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1124 | norm_L_var1 = L_shl(L_var1,norm_l(L_var1)). |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1125 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1126 | Complexity weight : 30 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1127 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1128 | Inputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1129 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1130 | L_var1 |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1131 | 32 bit long signed integer (Word32) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1132 | range : 0x8000 0000 <= var1 <= 0x7fff ffff. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1133 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1134 | Outputs : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1135 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1136 | none |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1137 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1138 | Return Value : |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1139 | |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1140 | var_out |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1141 | 16 bit short signed integer (Word16) whose value falls in the |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1142 | range : 0x0000 0000 <= var_out <= 0x0000 001f. |
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1143 |___________________________________________________________________________|
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1144 */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1145
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1146 static inline Word16 norm_l (Word32 L_var1)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1147 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1148 Word16 var_out;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1149
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1150 if (L_var1 == 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1151 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1152 var_out = 0;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1153 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1154 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1155 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1156 if (L_var1 == (Word32) 0xffffffffL)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1157 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1158 var_out = 31;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1159 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1160 else
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1161 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1162 if (L_var1 < 0)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1163 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1164 L_var1 = ~L_var1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1165 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1166 for (var_out = 0; L_var1 < (Word32) 0x40000000L; var_out++)
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1167 {
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1168 L_var1 <<= 1;
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1169 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1170 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1171 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1172
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1173 return (var_out);
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1174 }
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1175
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1176 /* ETSI functions that aren't inlined */
1c514150c033 libgsmefr: first big perf opt: inline most basic_op.h functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
1177
38
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1178 Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2); /* Mac without
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1179 sat, 1 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1180 Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2); /* Msu without
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1181 sat, 1 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1182 Word32 L_add_c (Word32 L_var1, Word32 L_var2); /* Long add with c, 2 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1183 Word32 L_sub_c (Word32 L_var1, Word32 L_var2); /* Long sub with c, 2 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1184 Word16 shr_r (Word16 var1, Word16 var2); /* Shift right with
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1185 round, 2 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1186 Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2); /* Mac with
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1187 rounding,2 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1188 Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2); /* Msu with
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1189 rounding,2 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1190 Word32 L_shr_r (Word32 L_var1, Word16 var2); /* Long shift right with
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1191 round, 3 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1192 Word32 L_sat (Word32 L_var1); /* Long saturation, 4 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1193 Word16 div_s (Word16 var1, Word16 var2); /* Short division, 18 */