(no commit message)

diff --git a/MagickCore/fx.c b/MagickCore/fx.c
index af004125dc1d50709a4ed583deb15b8524d6d3ad..1d76ff8b3d676e4a5974afbc9555d2f080773c09 100644 (file)
--- a/MagickCore/fx.c
+++ b/MagickCore/fx.c
@@ -2633,7 +2633,7 @@ static MagickRealType FxEvaluateSubexpression(FxInfo *fx_info,
         {
           alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
             exception);
-          return((MagickRealType) !!isnan(alpha));
+          return((MagickRealType) !!isnan((double) alpha));
         }
       if (LocaleCompare(expression,"i") == 0)
         return(FxGetSymbol(fx_info,channel,x,y,expression,exception));