diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2012-09-09 12:58:43 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-09-09 13:02:08 +0200 |
| commit | 363d302ea30fcdeb230e77eae7fa5a876d3d8711 (patch) | |
| tree | 1ea6a709a5c744c637129764e882e349ba346192 /libavcodec/imc.c | |
| parent | eab438eabbefb44b35d2db05f233509bec0c3502 (diff) | |
imc: use exp2 instead of pow(2,...)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/imc.c')
| -rw-r--r-- | libavcodec/imc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/imc.c b/libavcodec/imc.c index ba48df7460..73f1de3ac7 100644 --- a/libavcodec/imc.c +++ b/libavcodec/imc.c @@ -40,6 +40,7 @@ #include "dsputil.h" #include "fft.h" #include "libavutil/audioconvert.h" +#include "libavutil/libm.h" #include "sinewin.h" #include "imcdata.h" @@ -341,7 +342,7 @@ static void imc_decode_level_coefficients(IMCContext *q, int *levlCoeffBuf, float tmp, tmp2; // maybe some frequency division thingy - flcoeffs1[0] = 20000.0 / pow (2, levlCoeffBuf[0] * 0.18945); // 0.18945 = log2(10) * 0.05703125 + flcoeffs1[0] = 20000.0 / exp2 (levlCoeffBuf[0] * 0.18945); // 0.18945 = log2(10) * 0.05703125 flcoeffs2[0] = log2f(flcoeffs1[0]); tmp = flcoeffs1[0]; tmp2 = flcoeffs2[0]; |