From: cristy <urban-warrior@git.imagemagick.org>
Date: Sun, 2 Feb 2014 19:08:58 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~2717
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a6f32bff12188c20d5c4a63193baf3356a75c18b;p=imagemagick

---

diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index e5f82c1b3..c32abad3e 100644
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -1092,7 +1092,9 @@ static inline double MagickLog10(const double x)
 {
 #define Log10Epsilon  (1.0e-26)
 
- return(log10(fabs(x)+Log10Epsilon));
+ if (fabs(x) < Log10Epsilon)
+   return(log10(fabs(Log10Epsilon)));
+ return(log10(fabs(x)));
 }
 
 static MagickBooleanType GetPeakSignalToNoiseRatio(const Image *image,
diff --git a/MagickCore/feature.c b/MagickCore/feature.c
index 01e52f148..3b8dee700 100644
--- a/MagickCore/feature.c
+++ b/MagickCore/feature.c
@@ -140,7 +140,9 @@ static inline double MagickLog10(const double x)
 {
 #define Log10Epsilon  (1.0e-26)
 
- return(log10(fabs(x)+Log10Epsilon));
+ if (fabs(x) < Log10Epsilon)
+   return(log10(fabs(Log10Epsilon)));
+ return(log10(fabs(x)));
 }
 
 MagickExport ChannelFeatures *GetImageFeatures(const Image *image,