[SCM] libav/experimental: optimization tips for the wavelet

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit a282102d3fe2aea2302096e8a75320a2b8ef1cc7
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Tue Aug 21 20:15:52 2007 +0000

    optimization tips for the wavelet
    
    Originally committed as revision 10178 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/doc/snow.txt b/doc/snow.txt
index c3e16eb..12377e6 100644
--- a/doc/snow.txt
+++ b/doc/snow.txt
@@ -323,6 +323,10 @@ snows 9/7 Integer filter:
 / | \|/ | \|/ | \|/ | \|/
   |  +  |  +  |  +  |  +   +3/2
 
+optimization tips:
+following are exactly identical
+(3a)>>1 == a + (a>>1)
+(a + 4b + 8)>>4 == ((a>>2) + b + 2)>>2
 
 TODO:
 =====

-- 
Libav/FFmpeg packaging