[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec cook.c,1.8,1.9

[Alexander Strasser beastd]

Update of /cvsroot/ffmpeg/ffmpeg/libavcodec
In directory mail:/var2/tmp/cvs-serv15379/libavcodec

Modified Files:
	cook.c 
Log Message:
Don't use pow/powf functions where we just need integer arithmetic.
approved by Benjamin


Index: cook.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/cook.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -d -r1.8 -r1.9
--- cook.c	6 Feb 2006 11:21:10 -0000	1.8
+++ cook.c	10 Feb 2006 11:59:38 -0000	1.9
@@ -185,8 +185,8 @@
     int i;
     q->pow2tab[63] = 1.0;
     for (i=1 ; i<64 ; i++){
-        q->pow2tab[63+i]=(float)pow(2.0,(double)i);
-        q->pow2tab[63-i]=1.0/(float)pow(2.0,(double)i);
+        q->pow2tab[63+i]=(float)((uint64_t)1<<i);
+        q->pow2tab[63-i]=1.0/(float)((uint64_t)1<<i);
     }
 }
 
@@ -195,8 +195,8 @@
     int i;
     q->rootpow2tab[63] = 1.0;
     for (i=1 ; i<64 ; i++){
-        q->rootpow2tab[63+i]=sqrt((float)powf(2.0,(float)i));
-        q->rootpow2tab[63-i]=sqrt(1.0/(float)powf(2.0,(float)i));
+        q->rootpow2tab[63+i]=sqrt((float)((uint64_t)1<<i));
+        q->rootpow2tab[63-i]=sqrt(1.0/(float)((uint64_t)1<<i));
     }
 }