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| author | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2016-01-13 19:09:25 -0500 |
|---|---|---|
| committer | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2016-01-13 20:00:19 -0500 |
| commit | a0a47a09b0e204216072c1f77643de3f6f869732 (patch) | |
| tree | 52ce2f15227c7f9ce359b75f7f349fef2736f0b1 | |
| parent | 44ac13eed49593f4f8efdb72ab0d5b48e05aa305 (diff) | |
| download | ffmpeg-a0a47a09b0e204216072c1f77643de3f6f869732.tar.gz | |
lavu/libm: add isfinite fallback
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
| -rwxr-xr-x | configure | 1 | ||||
| -rw-r--r-- | libavutil/libm.h | 19 |
2 files changed, 20 insertions, 0 deletions
@@ -1820,6 +1820,7 @@ MATH_FUNCS=" exp2f expf hypot + isfinite isinf isnan ldexpf diff --git a/libavutil/libm.h b/libavutil/libm.h index bc44dcab0f..a819962391 100644 --- a/libavutil/libm.h +++ b/libavutil/libm.h @@ -343,6 +343,25 @@ static av_always_inline av_const int avpriv_isnan(double x) : avpriv_isnan(x)) #endif /* HAVE_ISNAN */ +#if !HAVE_ISFINITE +static av_always_inline av_const int avpriv_isfinitef(float x) +{ + uint32_t v = av_float2int(x); + return (v & 0x7f800000) != 0x7f800000; +} + +static av_always_inline av_const int avpriv_isfinite(double x) +{ + uint64_t v = av_double2int(x); + return (v & 0x7ff0000000000000) != 0x7ff0000000000000; +} + +#define isfinite(x) \ + (sizeof(x) == sizeof(float) \ + ? avpriv_isfinitef(x) \ + : avpriv_isfinite(x)) +#endif /* HAVE_ISFINITE */ + #if !HAVE_HYPOT static inline av_const double hypot(double x, double y) { |