[SCM] libav/experimental: print max and mse

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 86c624af1bc76af5d4d186d22589969ac4384558
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Sun Jul 29 09:58:36 2007 +0000

    print max and mse
    
    Originally committed as revision 9826 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index 725a814..fd3346b 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -144,13 +144,19 @@ int64_t gettime(void)
 void check_diff(float *tab1, float *tab2, int n)
 {
     int i;
+    double max= 0;
+    double error= 0;
 
     for(i=0;i<n;i++) {
-        if (fabsf(tab1[i] - tab2[i]) >= 1e-3) {
+        double e= fabsf(tab1[i] - tab2[i]);
+        if (e >= 1e-3) {
             av_log(NULL, AV_LOG_ERROR, "ERROR %d: %f %f\n",
                    i, tab1[i], tab2[i]);
         }
+        error+= e*e;
+        if(e>max) max= e;
     }
+    av_log(NULL, AV_LOG_INFO, "max:%f e:%g\n", max, sqrt(error)/n);
 }
 
 

-- 
Libav/FFmpeg packaging