ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Sep 3 02:00:05 2015 +0200| [733511fb53fedd3adaaeabc5db9d0b29e71ea1d3] | committer: Michael Niedermayer
avutil/common: Document FFABS() corner case Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=733511fb53fedd3adaaeabc5db9d0b29e71ea1d3 --- libavutil/common.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavutil/common.h b/libavutil/common.h index 3e62b6d..14343d9 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -58,6 +58,12 @@ : ((a) + (1<<(b)) - 1) >> (b)) #define FFUDIV(a,b) (((a)>0 ?(a):(a)-(b)+1) / (b)) #define FFUMOD(a,b) ((a)-(b)*FFUDIV(a,b)) + +/** + * Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they + * are not representable as absolute values of their type. This is the same + * as with *abs() + */ #define FFABS(a) ((a) >= 0 ? (a) : (-(a))) #define FFSIGN(a) ((a) > 0 ? 1 : -1) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
