From: dirk <dirk@git.imagemagick.org>
Date: Sun, 31 Aug 2014 10:25:26 +0000 (+0000)
Subject: Fix for Visual Studio compiler optimization.
X-Git-Tag: 7.0.1-0~2051
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=86d34133eb7d75f500eff7da50a07c157e348785;p=imagemagick

Fix for Visual Studio compiler optimization.
---

diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index 1a0cc55c6..a5c6c1fb7 100644
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -1597,10 +1597,13 @@ MagickExport MagickBooleanType IsImagesEqual(Image *image,
           continue;
         distance=fabs(p[i]-(double) GetPixelChannel(reconstruct_image,
           channel,q));
-        mean_error_per_pixel+=distance;
-        mean_error+=distance*distance;
-        if (distance > maximum_error)
-          maximum_error=distance;
+        if (distance >= MagickEpsilon)
+          {
+            mean_error_per_pixel+=distance;
+            mean_error+=distance*distance;
+            if (distance > maximum_error)
+              maximum_error=distance;
+          }
         area++;
       }
       p+=GetPixelChannels(image);