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| author | Martin Storsjö <martin@martin.st> | 2012-06-26 19:22:12 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2012-06-27 14:04:02 +0300 |
| commit | 46df708b45b34191973ef5181b052ce8e583bb4e (patch) | |
| tree | 45d52081abe82e712f9bb02d8a41e09883bfe21e | |
| parent | ef882e464ab270276f56c1088da646a8080b8460 (diff) | |
| download | ffmpeg-46df708b45b34191973ef5181b052ce8e583bb4e.tar.gz | |
libm: Provide fallback definitions for isnan() and isinf()
Signed-off-by: Martin Storsjö <martin@martin.st>
| -rwxr-xr-x | configure | 4 | ||||
| -rw-r--r-- | libavutil/libm.h | 21 |
2 files changed, 25 insertions, 0 deletions
@@ -1093,6 +1093,8 @@ HAVE_LIST=" inet_aton inline_asm isatty + isinf + isnan jack_port_get_latency_range ldbrx libdc1394_1 @@ -2922,6 +2924,8 @@ enabled vaapi && require vaapi va/va.h vaInitialize -lva check_mathfunc cbrtf check_mathfunc exp2 check_mathfunc exp2f +check_mathfunc isinf +check_mathfunc isnan check_mathfunc llrint check_mathfunc llrintf check_mathfunc log2 diff --git a/libavutil/libm.h b/libavutil/libm.h index b6d8a94fce..b5821e8267 100644 --- a/libavutil/libm.h +++ b/libavutil/libm.h @@ -27,6 +27,7 @@ #include <math.h> #include "config.h" #include "attributes.h" +#include "intfloat.h" #if !HAVE_CBRTF static av_always_inline float cbrtf(float x) @@ -45,6 +46,26 @@ static av_always_inline float cbrtf(float x) #define exp2f(x) ((float)exp2(x)) #endif /* HAVE_EXP2F */ +#if !HAVE_ISINF +static av_always_inline av_const int isinf(float x) +{ + uint32_t v = av_float2int(x); + if ((v & 0x7f800000) != 0x7f800000) + return 0; + return !(v & 0x007fffff); +} +#endif /* HAVE_ISINF */ + +#if !HAVE_ISNAN +static av_always_inline av_const int isnan(float x) +{ + uint32_t v = av_float2int(x); + if ((v & 0x7f800000) != 0x7f800000) + return 0; + return v & 0x007fffff; +} +#endif /* HAVE_ISNAN */ + #if !HAVE_LLRINT #undef llrint #define llrint(x) ((long long)rint(x)) |