---
configure | 4 ++++
libavutil/libm.h | 21 +++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/configure b/configure
index d3795e4..0f85f9a 100755
--- a/configure
+++ b/configure
@@ -1095,6 +1095,8 @@ HAVE_LIST="
inline_asm
io_h
isatty
+ isinf
+ isnan
jack_port_get_latency_range
ldbrx
libdc1394_1
@@ -2926,6 +2928,8 @@ enabled vaapi && require vaapi va/va.h vaInitialize -lva
check_mathfunc cbrtf
check_mathfunc exp2
check_mathfunc exp2f
+check_mathfunc isnan
+check_mathfunc isinf
check_mathfunc llrint
check_mathfunc llrintf
check_mathfunc log2
diff --git a/libavutil/libm.h b/libavutil/libm.h
index b6d8a94..49d26f0 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_ISNAN
+static av_always_inline av_const int isnan(double x)
+{
+ uint64_t v = av_double2int(x);
+ if ((v & UINT64_C(0x7ff0000000000000)) != UINT64_C(0x7ff0000000000000))
+ return 0;
+ return (v & UINT64_C(0x000fffffffffffff)) != 0;
+}
+#endif /* HAVE_ISNAN */
+
+#if !HAVE_ISINF
+static av_always_inline av_const int isinf(double x)
+{
+ uint64_t v = av_double2int(x);
+ if ((v & UINT64_C(0x7ff0000000000000)) != UINT64_C(0x7ff0000000000000))
+ return 0;
+ return !(v & UINT64_C(0x000fffffffffffff));
+}
+#endif /* HAVE_ISINF */
+
#if !HAVE_LLRINT
#undef llrint
#define llrint(x) ((long long)rint(x))
--
1.7.9.4
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