Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavfilter/af_biquads.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavfilter/af_biquads.c b/libavfilter/af_biquads.c
index ae5e1c6ade..86cd10df3b 100644
--- a/libavfilter/af_biquads.c
+++ b/libavfilter/af_biquads.c
@@ -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;
--
2.20.1
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