From: "Ronald S. Bultje" <[email protected]>
Add a fallback implementation if it doesn't exist.
---
configure | 2 ++
libavutil/libm.h | 7 +++++++
2 files changed, 9 insertions(+)
diff --git a/configure b/configure
index ffb1e7e..2888c72 100755
--- a/configure
+++ b/configure
@@ -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 b5821e8..8305b7c 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)
{
--
1.7.9.4
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