ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Nov 8 13:57:19 2015 +0100| [a1e3303fc01b95623d7a6963686c81b076690efd] | committer: Michael Niedermayer
avutil/softfloat: Fix exponent underflow in av_mul_sf() Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a1e3303fc01b95623d7a6963686c81b076690efd --- libavutil/softfloat.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavutil/softfloat.h b/libavutil/softfloat.h index fcad0f0..e47420e 100644 --- a/libavutil/softfloat.h +++ b/libavutil/softfloat.h @@ -98,7 +98,10 @@ static inline av_const SoftFloat av_mul_sf(SoftFloat a, SoftFloat b){ a.exp += b.exp; av_assert2((int32_t)((a.mant * (int64_t)b.mant) >> ONE_BITS) == (a.mant * (int64_t)b.mant) >> ONE_BITS); a.mant = (a.mant * (int64_t)b.mant) >> ONE_BITS; - return av_normalize1_sf((SoftFloat){a.mant, a.exp - 1}); + a = av_normalize1_sf((SoftFloat){a.mant, a.exp - 1}); + if (!a.mant || a.exp < MIN_EXP) + return FLOAT_0; + return a; } /** _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
