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/dcaenc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libavcodec/dcaenc.c b/libavcodec/dcaenc.c
index 6fcfb1a..cb880bd 100644
--- a/libavcodec/dcaenc.c
+++ b/libavcodec/dcaenc.c
@@ -24,6 +24,7 @@
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
+#include "libavutil/libm.h"
#include "avcodec.h"
#include "dca.h"
#include "dcadata.h"
@@ -179,7 +180,7 @@ static int encode_init(AVCodecContext *avctx)
cos_table[2048-i] = cos_table[i];
}
for (i = 0; i < 2048; i++) {
- cb_to_level[i] = (int32_t)(0x7fffffff * pow(10, -0.005 * i));
+ cb_to_level[i] = (int32_t)(0x7fffffff * exp10(-0.005 * i));
}
for (k = 0; k < 32; k++) {
@@ -205,7 +206,7 @@ static int encode_init(AVCodecContext *avctx)
}
for (i = 0; i < 256; i++) {
- double add = 1 + pow(10, -0.01 * i);
+ double add = 1 + exp10(-0.01 * i);
cb_to_add[i] = (int32_t)(100 * log10(add));
}
for (j = 0; j < 8; j++) {
--
2.6.4
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