mirror of
https://git.ffmpeg.org/ffmpeg.git
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179 lines
3.6 KiB
C
179 lines
3.6 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Replacements for frequently missing libm functions
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*/
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#ifndef AVUTIL_LIBM_H
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#define AVUTIL_LIBM_H
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#include <math.h>
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#include "config.h"
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#include "attributes.h"
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#include "intfloat.h"
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#if !HAVE_ATANF
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#undef atanf
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#define atanf(x) ((float)atan(x))
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#endif
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#if !HAVE_ATAN2F
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#undef atan2f
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#define atan2f(y, x) ((float)atan2(y, x))
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#endif
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#if !HAVE_POWF
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#undef powf
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#define powf(x, y) ((float)pow(x, y))
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#endif
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#if !HAVE_CBRTF
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static av_always_inline float cbrtf(float x)
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{
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return x < 0 ? -powf(-x, 1.0 / 3.0) : powf(x, 1.0 / 3.0);
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}
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#endif
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#if !HAVE_COSF
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#undef cosf
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#define cosf(x) ((float)cos(x))
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#endif
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#if !HAVE_EXPF
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#undef expf
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#define expf(x) ((float)exp(x))
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#endif
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#if !HAVE_EXP2
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#undef exp2
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#define exp2(x) exp((x) * 0.693147180559945)
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#endif /* HAVE_EXP2 */
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#if !HAVE_EXP2F
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#undef exp2f
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#define exp2f(x) ((float)exp2(x))
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#endif /* HAVE_EXP2F */
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#if !HAVE_ISINF
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static av_always_inline av_const int isinf(float x)
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{
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uint32_t v = av_float2int(x);
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if ((v & 0x7f800000) != 0x7f800000)
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return 0;
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return !(v & 0x007fffff);
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}
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#endif /* HAVE_ISINF */
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#if !HAVE_ISNAN
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static av_always_inline av_const int isnan(float x)
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{
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uint32_t v = av_float2int(x);
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if ((v & 0x7f800000) != 0x7f800000)
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return 0;
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return v & 0x007fffff;
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}
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#endif /* HAVE_ISNAN */
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#if !HAVE_LDEXPF
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#undef ldexpf
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#define ldexpf(x, exp) ((float)ldexp(x, exp))
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#endif
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#if !HAVE_LLRINT
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#undef llrint
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#define llrint(x) ((long long)rint(x))
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#endif /* HAVE_LLRINT */
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#if !HAVE_LLRINTF
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#undef llrintf
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#define llrintf(x) ((long long)rint(x))
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#endif /* HAVE_LLRINT */
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#if !HAVE_LOG2
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#undef log2
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#define log2(x) (log(x) * 1.44269504088896340736)
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#endif /* HAVE_LOG2 */
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#if !HAVE_LOG2F
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#undef log2f
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#define log2f(x) ((float)log2(x))
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#endif /* HAVE_LOG2F */
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#if !HAVE_LOG10F
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#undef log10f
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#define log10f(x) ((float)log10(x))
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#endif
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#if !HAVE_SINF
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#undef sinf
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#define sinf(x) ((float)sin(x))
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#endif
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#if !HAVE_RINT
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static inline double rint(double x)
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{
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return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
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}
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#endif /* HAVE_RINT */
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#if !HAVE_LRINT
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static av_always_inline av_const long int lrint(double x)
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{
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return rint(x);
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}
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#endif /* HAVE_LRINT */
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#if !HAVE_LRINTF
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static av_always_inline av_const long int lrintf(float x)
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{
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return (int)(rint(x));
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}
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#endif /* HAVE_LRINTF */
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#if !HAVE_ROUND
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static av_always_inline av_const double round(double x)
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{
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return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
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}
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#endif /* HAVE_ROUND */
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#if !HAVE_ROUNDF
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static av_always_inline av_const float roundf(float x)
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{
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return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
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}
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#endif /* HAVE_ROUNDF */
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#if !HAVE_TRUNC
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static av_always_inline av_const double trunc(double x)
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{
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return (x > 0) ? floor(x) : ceil(x);
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}
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#endif /* HAVE_TRUNC */
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#if !HAVE_TRUNCF
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static av_always_inline av_const float truncf(float x)
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{
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return (x > 0) ? floor(x) : ceil(x);
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}
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#endif /* HAVE_TRUNCF */
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#endif /* AVUTIL_LIBM_H */
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