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-rwxr-xr-xconfigure3
-rw-r--r--libavutil/internal.h7
2 files changed, 9 insertions, 1 deletions
diff --git a/configure b/configure
index 37af6c4bca..f07e922839 100755
--- a/configure
+++ b/configure
@@ -886,6 +886,7 @@ HAVE_LIST="
sys_videoio_h
termios_h
threads
+ truncf
winsock2_h
yasm
"
@@ -1875,7 +1876,7 @@ done
check_lib math.h sin -lm
# test for C99 functions in math.h
-for func in llrint lrint lrintf round roundf; do
+for func in llrint lrint lrintf round roundf truncf; do
check_exec <<EOF && enable $func || disable $func
#include <math.h>
int main(void) { return ($func(3.999f) > 0)?0:1; }
diff --git a/libavutil/internal.h b/libavutil/internal.h
index bbf4407139..957566026d 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -294,4 +294,11 @@ static av_always_inline av_const float roundf(float x)
}
#endif /* HAVE_ROUNDF */
+#ifndef HAVE_TRUNCF
+static av_always_inline av_const float truncf(float x)
+{
+ return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNCF */
+
#endif /* AVUTIL_INTERNAL_H */