diff options
| 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 /libavutil/libm.h | |
| parent | ef882e464ab270276f56c1088da646a8080b8460 (diff) | |
libm: Provide fallback definitions for isnan() and isinf()
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil/libm.h')
| -rw-r--r-- | libavutil/libm.h | 21 |
1 files changed, 21 insertions, 0 deletions
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)) |