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additional math.h functions for djgpp

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This commit is contained in:
Peter Ross 2018-11-11 21:49:29 +11:00
parent 533ba0b6b5
commit dea1224754
4 changed files with 75 additions and 0 deletions
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47
compat/djgpp/math.c Normal file
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@ -0,0 +1,47 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <math.h>
#define FUN(name, type, op) \
type name(type x, type y) \
{ \
if (fpclassify(x) == FP_NAN) return y; \
if (fpclassify(y) == FP_NAN) return x; \
return x op y ? x : y; \
}
FUN(fmin, double, <)
FUN(fmax, double, >)
FUN(fminf, float, <)
FUN(fmaxf, float, >)
long double fmodl(long double x, long double y)
{
return fmod(x, y);
}
long double scalbnl(long double x, int exp)
{
return scalbn(x, exp);
}
long double copysignl(long double x, long double y)
{
return copysign(x, y);
}

25
compat/djgpp/math.h Normal file
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@ -0,0 +1,25 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
double fmin(double, double);
double fmax(double, double);
float fminf(float, float);
float fmaxf(float, float);
long double fmodl(long double, long double);
long double scalbnl(long double, int);
long double copysignl(long double, long double);

2
configure vendored
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@ -5468,6 +5468,8 @@ EOF
elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
eval ${pfx}libc_type=djgpp
add_cppflags -U__STRICT_ANSI__
add_cflags "-include $source_path/compat/djgpp/math.h"
add_compat djgpp/math.o
fi
test_${pfx}cc <<EOF
#include <time.h>

1
tests/ref/fate/source
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@ -28,6 +28,7 @@ compat/avisynth/avxsynth_c.h
compat/avisynth/windowsPorts/basicDataTypeConversions.h
compat/avisynth/windowsPorts/windows2linux.h
compat/cuda/dynlink_loader.h
compat/djgpp/math.h
compat/float/float.h
compat/float/limits.h
Use of av_clip() where av_clip_uintp2() could be used: