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Check for the presence of llrint(), lrint(), round() and roundf()

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and provide simple replacements if they are unavailable.
patch by Michael Kostylev, mik niipt ru

Originally committed as revision 11326 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Kostylev 2007-12-27 01:53:02 +00:00 • committed by Diego Biurrun
parent 52d086084e
commit a33cab3a9a
2 changed files with 37 additions and 3 deletions
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12
configure vendored
View file

@ -706,6 +706,8 @@ HAVE_LIST="
getrusage
imlib2
inet_aton
llrint
lrint
lrintf
machine_ioctl_bt848_h
machine_ioctl_meteor_h
@ -714,6 +716,8 @@ HAVE_LIST="
mkstemp
mlib
ppc64
round
roundf
sdl
sdl_video_size
soundcard_h
@ -1593,12 +1597,14 @@ done
check_lib math.h sin -lm
# test for lrintf in math.h
check_exec <<EOF && enable lrintf || disable lrintf
# test for C99 functions in math.h
for func in llrint lrint lrintf round roundf; do
check_exec <<EOF && enable $func || disable $func
#define _ISOC9X_SOURCE 1
#include <math.h>
int main(void) { return (lrintf(3.999f) > 0)?0:1; }
int main(void) { return ($func(3.999f) > 0)?0:1; }
EOF
done
enabled_any libamr_nb libamr_wb && enable libamr

28
libavutil/internal.h
View file

@ -270,6 +270,20 @@ if((y)<(x)){\
}\
}
#ifndef HAVE_LLRINT
static av_always_inline long long llrint(double x)
{
return rint(x);
}
#endif /* HAVE_LLRINT */
#ifndef HAVE_LRINT
static av_always_inline long int lrint(double x)
{
return rint(x);
}
#endif /* HAVE_LRINT */
#ifndef HAVE_LRINTF
static av_always_inline long int lrintf(float x)
{
@ -277,4 +291,18 @@ static av_always_inline long int lrintf(float x)
}
#endif /* HAVE_LRINTF */
#ifndef HAVE_ROUND
static av_always_inline double round(double x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUND */
#ifndef HAVE_ROUNDF
static av_always_inline float roundf(float x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUNDF */
#endif /* FFMPEG_INTERNAL_H */