removed ex::const_iterator (iterators will be implemented in GiNaC 1.2, but

[ginac.git] / check / exam_differentiation.cpp

diff --git a/check/exam_differentiation.cpp b/check/exam_differentiation.cpp
index d2015822d308a25e305e8265ae65e098700fd9d7..b131eb03d33249d2598f74664ad4f27f66c13e9b 100644 (file)
--- a/check/exam_differentiation.cpp
+++ b/check/exam_differentiation.cpp
@@ -3,7 +3,7 @@
  *  Tests for symbolic differentiation, including various functions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2003 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
@@ -45,9 +45,7 @@ static unsigned check_diff(const ex &e, const symbol &x,
                clog << "derivative of " << e << " by " << x << " returned "
                     << ed << " instead of " << d << endl;
                clog << "returned:" << endl;
-               ed.printtree(clog);
-               clog << endl << "instead of" << endl;
-               d.printtree(clog);
+               clog << tree << ed << "instead of\n" << d << dflt;
 
                return 1;
        }