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avfilter/af_biquads: minor simplification by using ff_exp10()

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-12-31 21:12:42 +01:00
parent 5785e0e9c4
commit 1b6695354d
1 changed files with 2 additions and 1 deletions

3
libavfilter/af_biquads.c
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@ -63,6 +63,7 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/ffmath.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
@ -245,7 +246,7 @@ static int config_filter(AVFilterLink *outlink, int reset)
AVFilterContext *ctx = outlink->src;
BiquadsContext *s = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
double A = exp(s->gain / 40 * log(10.));
double A = ff_exp10(s->gain / 40);
double w0 = 2 * M_PI * s->frequency / inlink->sample_rate;
double alpha, beta;