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[imagemagick] / magick / fx.c

diff --git a/magick/fx.c b/magick/fx.c
index 5b038c014e220e3bac6e25b12b4a01550b441eb3..c88c313d7df0f301c561db2a7fe4ac8fd6b12d6d 100644 (file)
--- a/magick/fx.c
+++ b/magick/fx.c
@@ -17,7 +17,7 @@
 %                                 October 1996                                %
 %                                                                             %
 %                                                                             %
-%  Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization      %
+%  Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization      %
 %  dedicated to making software imaging solutions freely available.           %
 %                                                                             %
 %  You may not use this file except in compliance with the License.  You may  %
@@ -144,6 +144,7 @@ struct _FxInfo
 %  The format of the AcquireFxInfo method is:
 %
 %      FxInfo *AcquireFxInfo(Image *image,const char *expression)
+%
 %  A description of each parameter follows:
 %
 %    o image: the image.
@@ -214,6 +215,10 @@ MagickExport FxInfo *AcquireFxInfo(const Image *image,const char *expression)
       (void) SubstituteString(&fx_info->expression,"8e-","8**10^-");
       (void) SubstituteString(&fx_info->expression,"9e-","9**10^-");
     }
+  /*
+    Force right-to-left associativity for unary negation.
+  */
+  (void) SubstituteString(&fx_info->expression,"-","-1.0*");
   /*
     Convert complex to simple operators.
   */