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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-09-13 22:08:00 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-09-13 22:44:42 +0200 |
| commit | c21f81999a3cd7a98063585e439dd3055d0eb32a (patch) | |
| tree | 90d0d9f52209a222ebefe6a9abc8c5226d1e038f | |
| parent | 51fa6538297f26f27a8ea1d9c0c3016f42ee7ecf (diff) | |
| download | ffmpeg-c21f81999a3cd7a98063585e439dd3055d0eb32a.tar.gz | |
mpegaudioenc: replace pow(2,.. by exp2(
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/mpegaudioenc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/mpegaudioenc.c b/libavcodec/mpegaudioenc.c index 64429d31c9..806cb21a88 100644 --- a/libavcodec/mpegaudioenc.c +++ b/libavcodec/mpegaudioenc.c @@ -148,16 +148,16 @@ static av_cold int MPA_encode_init(AVCodecContext *avctx) } for(i=0;i<64;i++) { - v = (int)(pow(2.0, (3 - i) / 3.0) * (1 << 20)); + v = (int)(exp2((3 - i) / 3.0) * (1 << 20)); if (v <= 0) v = 1; scale_factor_table[i] = v; #ifdef USE_FLOATS - scale_factor_inv_table[i] = pow(2.0, -(3 - i) / 3.0) / (float)(1 << 20); + scale_factor_inv_table[i] = exp2(-(3 - i) / 3.0) / (float)(1 << 20); #else #define P 15 scale_factor_shift[i] = 21 - P - (i / 3); - scale_factor_mult[i] = (1 << P) * pow(2.0, (i % 3) / 3.0); + scale_factor_mult[i] = (1 << P) * exp2((i % 3) / 3.0); #endif } for(i=0;i<128;i++) { |