...

diff --git a/MagickCore/magick-type.h b/MagickCore/magick-type.h
index cc204e0c10a409bf4797d73e8fee373baf428fb9..11f6b8805126e0df829a11c74be1f2a4d8f06d65 100644 (file)
--- a/MagickCore/magick-type.h
+++ b/MagickCore/magick-type.h
@@ -176,7 +176,7 @@ typedef enum
 #  include <float.h>
 #  define IsNaN(a) _isnan(a)
 #else
-#  define IsNaN(a) (a != a)
+#  define IsNaN(a) ((a) != (a))
 #endif
 #if !defined(INFINITY)
 #  define INFINITY (-logf(0f))