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| author | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-12-27 16:50:09 -0800 |
|---|---|---|
| committer | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-12-28 16:48:41 -0800 |
| commit | 9f4c7b4df7f31755b7caf4d080c7577c787c1e72 (patch) | |
| tree | e86e1c8c0b3e6e84bbfe88c4cb1223902db184cf | |
| parent | 59ac7ce4dac5b2a68c4afb827b03a595e2d2f32e (diff) | |
| download | ffmpeg-9f4c7b4df7f31755b7caf4d080c7577c787c1e72.tar.gz | |
lavfi/af_anequalizer: replace pow(x,-2) by 1/(x*x)
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
| -rw-r--r-- | libavfilter/af_anequalizer.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavfilter/af_anequalizer.c b/libavfilter/af_anequalizer.c index d7b5b6cf08..649c0b961d 100644 --- a/libavfilter/af_anequalizer.c +++ b/libavfilter/af_anequalizer.c @@ -391,8 +391,8 @@ static void chebyshev1_bp_filter(EqualizatorFilter *f, epsilon = sqrt((G*G - Gb*Gb) / (Gb*Gb - G0*G0)); g0 = pow(G0,1.0/N); - alfa = pow(1.0/epsilon + sqrt(1 + pow(epsilon,-2.0)), 1.0/N); - beta = pow(G/epsilon + Gb * sqrt(1 + pow(epsilon,-2.0)), 1.0/N); + alfa = pow(1.0/epsilon + sqrt(1 + 1/(epsilon*epsilon)), 1.0/N); + beta = pow(G/epsilon + Gb * sqrt(1 + 1/(epsilon*epsilon)), 1.0/N); a = 0.5 * (alfa - 1.0/alfa); b = 0.5 * (beta - g0*g0*(1/beta)); tetta_b = tan(wb/2); |