exp10, recently introduced, is superior for the purpose.
We may want to change the exp10 fallback to pow(10,) based; value may
change slightly here.
Signed-off-by: Ganesh Ajjanagadde <gajjanaga...@gmail.com>
---
libavcodec/cngdec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/cngdec.c b/libavcodec/cngdec.c
index c0295cd..aed4579 100644
--- a/libavcodec/cngdec.c
+++ b/libavcodec/cngdec.c
@@ -22,6 +22,7 @@
#include <math.h>
#include "libavutil/common.h"
+#include "libavutil/libm.h"
#include "avcodec.h"
#include "celp_filters.h"
#include "internal.h"
@@ -112,7 +113,7 @@ static int cng_decode_frame(AVCodecContext *avctx, void
*data,
if (avpkt->size) {
int dbov = -avpkt->data[0];
- p->target_energy = 1081109975 * pow(10, dbov / 10.0) * 0.75;
+ p->target_energy = 1081109975 * exp10(dbov / 10.0) * 0.75;
memset(p->target_refl_coef, 0, p->order *
sizeof(*p->target_refl_coef));
for (i = 0; i < FFMIN(avpkt->size - 1, p->order); i++) {
p->target_refl_coef[i] = (avpkt->data[1 + i] - 127) / 128.0;
--
2.6.4
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