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avcodec/zmbvenc: use log2 instead of log()/M_LN2

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This is likely more precise and conveys the intent better.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-10-29 00:10:45 -04:00
parent 68ba63ebd5
commit 603d627457
1 changed files with 1 additions and 1 deletions
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2
libavcodec/zmbvenc.c
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@ -277,7 +277,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
int lvl = 9;
for(i=1; i<256; i++)
score_tab[i]= -i * log(i/(double)(ZMBV_BLOCK*ZMBV_BLOCK)) * (256/M_LN2);
score_tab[i]= -i * log2(i/(double)(ZMBV_BLOCK*ZMBV_BLOCK)) * 256;
c->avctx = avctx;