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author | Alexander Strasser <eclipse7@gmx.net> | 2006-02-10 11:59:38 +0000 |
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committer | Alexander Strasser <eclipse7@gmx.net> | 2006-02-10 11:59:38 +0000 |
commit | 5c4b1b253848eaf098301c67ba426d326579bb68 (patch) | |
tree | 3761dc32b2c6af69293bf25978ebc619c5deaffc /libavcodec/cook.c | |
parent | 0a925109ec341dea5fc51e54a2a9c13aa6f28154 (diff) | |
download | ffmpeg-streaming-5c4b1b253848eaf098301c67ba426d326579bb68.zip ffmpeg-streaming-5c4b1b253848eaf098301c67ba426d326579bb68.tar.gz |
Don't use pow/powf functions where we just need integer arithmetic.
approved by Benjamin
Originally committed as revision 4973 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/cook.c')
-rw-r--r-- | libavcodec/cook.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/cook.c b/libavcodec/cook.c index 4140be1..07368ca 100644 --- a/libavcodec/cook.c +++ b/libavcodec/cook.c @@ -185,8 +185,8 @@ static void init_pow2table(COOKContext *q){ int i; q->pow2tab[63] = 1.0; for (i=1 ; i<64 ; i++){ - q->pow2tab[63+i]=(float)pow(2.0,(double)i); - q->pow2tab[63-i]=1.0/(float)pow(2.0,(double)i); + q->pow2tab[63+i]=(float)((uint64_t)1<<i); + q->pow2tab[63-i]=1.0/(float)((uint64_t)1<<i); } } @@ -195,8 +195,8 @@ static void init_rootpow2table(COOKContext *q){ int i; q->rootpow2tab[63] = 1.0; for (i=1 ; i<64 ; i++){ - q->rootpow2tab[63+i]=sqrt((float)powf(2.0,(float)i)); - q->rootpow2tab[63-i]=sqrt(1.0/(float)powf(2.0,(float)i)); + q->rootpow2tab[63+i]=sqrt((float)((uint64_t)1<<i)); + q->rootpow2tab[63-i]=sqrt(1.0/(float)((uint64_t)1<<i)); } } |