[SCM] libav/experimental: Simplify: move division by constant off the loop

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit a987a126fd29bb234e82a7ea699d4ca3326c684c
Author: Vitor Sessak <vitor1001 at gmail.com>
Date:   Wed Sep 24 20:03:58 2008 +0000

    Simplify: move division by constant off the loop
    
    Originally committed as revision 15402 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/ra288.c b/libavcodec/ra288.c
index f7e1af5..bfc2b37 100644
--- a/libavcodec/ra288.c
+++ b/libavcodec/ra288.c
@@ -88,10 +88,11 @@ static void decode(RA288Context *ractx, float gain, int cb_coef)
     sum = av_clipf(sum, 0, 60);
 
     /* block 48 of G.728 spec */
-    sumsum = exp(sum * 0.1151292546497) * gain; /* pow(10.0,sum/20)*gain */
+    /* exp(sum * 0.1151292546497) == pow(10.0,sum/20) */
+    sumsum = exp(sum * 0.1151292546497) * gain / 2048.;
 
     for (i=0; i < 5; i++)
-        buffer[i] = codetable[cb_coef][i] * sumsum * (1./2048.);
+        buffer[i] = codetable[cb_coef][i] * sumsum;
 
     sum = scalar_product_float(buffer, buffer, 5) / 5;
 

-- 
Libav/FFmpeg packaging