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