* Happy New Year(s)!

[ginac.git] / ginac / fderivative.cpp

diff --git a/ginac/fderivative.cpp b/ginac/fderivative.cpp
index 0671123229824a734e3b9c621cd4996bd3ebc58c..48a8e75fecd7f448279743d642dde17cee761266 100644 (file)
--- a/ginac/fderivative.cpp
+++ b/ginac/fderivative.cpp
@@ -3,7 +3,7 @@
  *  Implementation of abstract derivatives of functions. */
 
 /*
  *  Implementation of abstract derivatives of functions. */
 
 /*

- *  GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2007 Johannes Gutenberg University Mainz, Germany

  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by


@@ -214,7 +214,7 @@ bool fderivative::match_same_type(const basic & other) const
        GINAC_ASSERT(is_a<fderivative>(other));
        const fderivative & o = static_cast<const fderivative &>(other);
 
        GINAC_ASSERT(is_a<fderivative>(other));
        const fderivative & o = static_cast<const fderivative &>(other);
 

-       return parameter_set == o.parameter_set;
+       return parameter_set == o.parameter_set && inherited::match_same_type(other);

 }
 
 } // namespace GiNaC
 }
 
 } // namespace GiNaC