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4349 | Serge | 1 | /* |
2 | * This file is part of FFmpeg. |
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3 | * |
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4 | * FFmpeg is free software; you can redistribute it and/or |
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5 | * modify it under the terms of the GNU Lesser General Public |
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6 | * License as published by the Free Software Foundation; either |
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7 | * version 2.1 of the License, or (at your option) any later version. |
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8 | * |
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9 | * FFmpeg is distributed in the hope that it will be useful, |
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 | * Lesser General Public License for more details. |
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13 | * |
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14 | * You should have received a copy of the GNU Lesser General Public |
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15 | * License along with FFmpeg; if not, write to the Free Software |
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16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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17 | */ |
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18 | |||
19 | /** |
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20 | * @file |
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21 | * Replacements for frequently missing libm functions |
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22 | */ |
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23 | |||
24 | #ifndef AVUTIL_LIBM_H |
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25 | #define AVUTIL_LIBM_H |
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26 | |||
27 | #include |
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28 | #include "config.h" |
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29 | #include "attributes.h" |
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30 | #include "intfloat.h" |
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31 | |||
32 | #if HAVE_MIPSFPU && HAVE_INLINE_ASM |
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33 | #include "libavutil/mips/libm_mips.h" |
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34 | #endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM*/ |
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35 | |||
36 | #if !HAVE_ATANF |
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37 | #undef atanf |
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38 | #define atanf(x) ((float)atan(x)) |
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39 | #endif |
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40 | |||
41 | #if !HAVE_ATAN2F |
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42 | #undef atan2f |
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43 | #define atan2f(y, x) ((float)atan2(y, x)) |
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44 | #endif |
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45 | |||
46 | #if !HAVE_POWF |
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47 | #undef powf |
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48 | #define powf(x, y) ((float)pow(x, y)) |
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49 | #endif |
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50 | |||
51 | #if !HAVE_CBRT |
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52 | static av_always_inline double cbrt(double x) |
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53 | { |
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54 | return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0); |
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55 | } |
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56 | #endif |
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57 | |||
58 | #if !HAVE_CBRTF |
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59 | static av_always_inline float cbrtf(float x) |
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60 | { |
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61 | return x < 0 ? -powf(-x, 1.0 / 3.0) : powf(x, 1.0 / 3.0); |
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62 | } |
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63 | #endif |
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64 | |||
65 | #if !HAVE_COSF |
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66 | #undef cosf |
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67 | #define cosf(x) ((float)cos(x)) |
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68 | #endif |
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69 | |||
70 | #if !HAVE_EXPF |
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71 | #undef expf |
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72 | #define expf(x) ((float)exp(x)) |
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73 | #endif |
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74 | |||
75 | #if !HAVE_EXP2 |
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76 | #undef exp2 |
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77 | #define exp2(x) exp((x) * 0.693147180559945) |
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78 | #endif /* HAVE_EXP2 */ |
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79 | |||
80 | #if !HAVE_EXP2F |
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81 | #undef exp2f |
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82 | #define exp2f(x) ((float)exp2(x)) |
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83 | #endif /* HAVE_EXP2F */ |
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84 | |||
85 | #if !HAVE_ISINF |
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86 | static av_always_inline av_const int isinf(float x) |
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87 | { |
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88 | uint32_t v = av_float2int(x); |
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89 | if ((v & 0x7f800000) != 0x7f800000) |
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90 | return 0; |
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91 | return !(v & 0x007fffff); |
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92 | } |
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93 | #endif /* HAVE_ISINF */ |
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94 | |||
95 | #if !HAVE_ISNAN |
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96 | static av_always_inline av_const int isnan(float x) |
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97 | { |
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98 | uint32_t v = av_float2int(x); |
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99 | if ((v & 0x7f800000) != 0x7f800000) |
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100 | return 0; |
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101 | return v & 0x007fffff; |
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102 | } |
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103 | #endif /* HAVE_ISNAN */ |
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104 | |||
105 | #if !HAVE_LDEXPF |
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106 | #undef ldexpf |
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107 | #define ldexpf(x, exp) ((float)ldexp(x, exp)) |
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108 | #endif |
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109 | |||
110 | #if !HAVE_LLRINT |
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111 | #undef llrint |
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112 | #define llrint(x) ((long long)rint(x)) |
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113 | #endif /* HAVE_LLRINT */ |
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114 | |||
115 | #if !HAVE_LLRINTF |
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116 | #undef llrintf |
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117 | #define llrintf(x) ((long long)rint(x)) |
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118 | #endif /* HAVE_LLRINT */ |
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119 | |||
120 | #if !HAVE_LOG2 |
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121 | #undef log2 |
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122 | #define log2(x) (log(x) * 1.44269504088896340736) |
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123 | #endif /* HAVE_LOG2 */ |
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124 | |||
125 | #if !HAVE_LOG2F |
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126 | #undef log2f |
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127 | #define log2f(x) ((float)log2(x)) |
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128 | #endif /* HAVE_LOG2F */ |
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129 | |||
130 | #if !HAVE_LOG10F |
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131 | #undef log10f |
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132 | #define log10f(x) ((float)log10(x)) |
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133 | #endif |
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134 | |||
135 | #if !HAVE_SINF |
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136 | #undef sinf |
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137 | #define sinf(x) ((float)sin(x)) |
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138 | #endif |
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139 | |||
140 | #if !HAVE_RINT |
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141 | static inline double rint(double x) |
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142 | { |
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143 | return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5); |
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144 | } |
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145 | #endif /* HAVE_RINT */ |
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146 | |||
147 | #if !HAVE_LRINT |
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148 | static av_always_inline av_const long int lrint(double x) |
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149 | { |
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150 | return rint(x); |
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151 | } |
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152 | #endif /* HAVE_LRINT */ |
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153 | |||
154 | #if !HAVE_LRINTF |
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155 | static av_always_inline av_const long int lrintf(float x) |
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156 | { |
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157 | return (int)(rint(x)); |
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158 | } |
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159 | #endif /* HAVE_LRINTF */ |
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160 | |||
161 | #if !HAVE_ROUND |
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162 | static av_always_inline av_const double round(double x) |
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163 | { |
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164 | return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5); |
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165 | } |
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166 | #endif /* HAVE_ROUND */ |
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167 | |||
168 | #if !HAVE_ROUNDF |
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169 | static av_always_inline av_const float roundf(float x) |
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170 | { |
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171 | return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5); |
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172 | } |
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173 | #endif /* HAVE_ROUNDF */ |
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174 | |||
175 | #if !HAVE_TRUNC |
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176 | static av_always_inline av_const double trunc(double x) |
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177 | { |
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178 | return (x > 0) ? floor(x) : ceil(x); |
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179 | } |
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180 | #endif /* HAVE_TRUNC */ |
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181 | |||
182 | #if !HAVE_TRUNCF |
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183 | static av_always_inline av_const float truncf(float x) |
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184 | { |
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185 | return (x > 0) ? floor(x) : ceil(x); |
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186 | } |
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187 | #endif /* HAVE_TRUNCF */ |
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188 | |||
189 | #endif /* AVUTIL_LIBM_H */>> |