[FFmpeg-cvslog] r21038 - trunk/libavcodec/resample2.c

[michael]

Author: michael
Date: Wed Jan  6 23:40:52 2010
New Revision: 21038

Log:
Stop the approximation in bessel() once it does no longer improve.

Modified:
   trunk/libavcodec/resample2.c

Modified: trunk/libavcodec/resample2.c
==============================================================================
--- trunk/libavcodec/resample2.c	Wed Jan  6 22:51:20 2010	(r21037)
+++ trunk/libavcodec/resample2.c	Wed Jan  6 23:40:52 2010	(r21038)
@@ -76,11 +76,13 @@ typedef struct AVResampleContext{
  */
 static double bessel(double x){
     double v=1;
+    double lastv=0;
     double t=1;
     int i;
 
     x= x*x/4;
-    for(i=1; i<50; i++){
+    for(i=1; v != lastv; i++){
+        lastv=v;
         t *= x/(i*i);
         v += t;
     }