exp2 is faster.
Signed-off-by: Ganesh Ajjanagadde <gajjanaga...@gmail.com>
---
libavcodec/opus_celt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/opus_celt.c b/libavcodec/opus_celt.c
index 9911de3..474452f 100644
--- a/libavcodec/opus_celt.c
+++ b/libavcodec/opus_celt.c
@@ -1677,7 +1677,7 @@ static void celt_denormalize(CeltContext *s, CeltFrame
*frame, float *data)
for (i = s->startband; i < s->endband; i++) {
float *dst = data + (celt_freq_bands[i] << s->duration);
- float norm = pow(2, frame->energy[i] + celt_mean_energy[i]);
+ float norm = exp2(frame->energy[i] + celt_mean_energy[i]);
for (j = 0; j < celt_freq_range[i] << s->duration; j++)
dst[j] *= norm;
@@ -1857,7 +1857,7 @@ static void process_anticollapse(CeltContext *s,
CeltFrame *frame, float *X)
/* r needs to be multiplied by 2 or 2*sqrt(2) depending on LM because
short blocks don't have the same energy as long */
- r = pow(2, 1 - Ediff);
+ r = exp2(1 - Ediff);
if (s->duration == 3)
r *= M_SQRT2;
r = FFMIN(thresh, r) * sqrt_1;
--
2.6.3
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