diff options
| author | Ronald S. Bultje <rsbultje@gmail.com> | 2012-06-26 15:05:28 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2012-07-11 10:40:11 +0300 |
| commit | 183b1c2268529bbb8389d572deb00083c49682dc (patch) | |
| tree | 5f9aaf3e89320bf6cbf67121356e7556ae25cd02 | |
| parent | 781888da892d99cab70cf6007538d6d9b7382e81 (diff) | |
configure: Check for the math function rint
Add a fallback implementation if it doesn't exist.
Signed-off-by: Martin Storsjö <martin@martin.st>
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | libavutil/libm.h | 7 |
2 files changed, 9 insertions, 0 deletions
@@ -1124,6 +1124,7 @@ HAVE_LIST=" poll_h posix_memalign rdtsc + rint round roundf rweflags @@ -2954,6 +2955,7 @@ check_mathfunc log2 check_mathfunc log2f check_mathfunc lrint check_mathfunc lrintf +check_mathfunc rint check_mathfunc round check_mathfunc roundf check_mathfunc trunc diff --git a/libavutil/libm.h b/libavutil/libm.h index b5821e8267..8305b7c61b 100644 --- a/libavutil/libm.h +++ b/libavutil/libm.h @@ -86,6 +86,13 @@ static av_always_inline av_const int isnan(float x) #define log2f(x) ((float)log2(x)) #endif /* HAVE_LOG2F */ +#if !HAVE_RINT +static inline double rint(double x) +{ + return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5); +} +#endif /* HAVE_RINT */ + #if !HAVE_LRINT static av_always_inline av_const long int lrint(double x) { |