X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Finternal.h;h=f4e12e80847975ec96a714fc91893c8f69abc4a2;hb=5af0a701a1c0356fd1a79671de1cf06974e78d76;hp=dcb2113f6fed81d63f9acee3340aac3c79618ed2;hpb=dfa0800c414a66ceebf394bb6d4208cd68673e4c;p=ffmpeg

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index dcb2113f6fe..f4e12e80847 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -35,6 +35,8 @@
 
 #define FF_SANE_NB_CHANNELS 63U
 
+#define FF_SIGNBIT(x) ((x) >> CHAR_BIT * sizeof(x) - 1)
+
 #if HAVE_AVX
 #   define STRIDE_ALIGN 32
 #elif HAVE_SIMD_ALIGN_16