From: cristy <urban-warrior@git.imagemagick.org>
Date: Wed, 2 Nov 2011 19:16:15 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~6699
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=639399c8c4ada4c202b892dc0cce31026149ee3a;p=imagemagick

---

diff --git a/MagickCore/fx.c b/MagickCore/fx.c
index e21f4f941..af004125d 100644
--- a/MagickCore/fx.c
+++ b/MagickCore/fx.c
@@ -2629,6 +2629,12 @@ static MagickRealType FxEvaluateSubexpression(FxInfo *fx_info,
             exception);
           return((MagickRealType) floor(alpha));
         }
+      if (LocaleNCompare(expression,"isnan",5) == 0)
+        {
+          alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
+            exception);
+          return((MagickRealType) !!isnan(alpha));
+        }
       if (LocaleCompare(expression,"i") == 0)
         return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
       break;