From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 30 Jul 2016 00:06:59 +0000 (-0400)
Subject: ...
X-Git-Tag: 7.0.2-7~11
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=88cdbeb2a6dd97eb1fde772b55ba1842f96c167b;p=imagemagick

...
---

diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index c78a47bc9..c899dfd6b 100644
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -1144,7 +1144,8 @@ static MagickBooleanType GetPeakSignalToNoiseRatio(const Image *image,
 
   status=GetMeanSquaredDistortion(image,reconstruct_image,distortion,exception);
   for (i=0; i <= MaxPixelChannels; i++)
-    distortion[i]=20.0*MagickLog10((double) 1.0/sqrt(distortion[i]));
+    if (fabs(distortion[i]) >= MagickEpsilon)
+      distortion[i]=20.0*MagickLog10((double) 1.0/sqrt(distortion[i]));
   return(status);
 }