X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Ffail.h;h=2e88c8a43927545cead80e173a13406b364f6673;hp=240509239851bdd68e4ec0810d9978fa07820a5f;hb=b84032466e31ff23d4be3b81a3f535b2c70202e5;hpb=0cf43f3096cbcfc7472ff9c8927c6eb74f2eeb8c

diff --git a/ginac/fail.h b/ginac/fail.h
index 24050923..2e88c8a4 100644
--- a/ginac/fail.h
+++ b/ginac/fail.h
@@ -1,10 +1,10 @@
 /** @file fail.h
  *
  *  Interface to class signaling failure of operation. Considered obsolete
- *  (all of this is replaced by exceptions). */
+ *  somewhat obsolete (most of this can be replaced by exceptions). */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2008 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
@@ -18,7 +18,7 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #ifndef __GINAC_FAIL_H__
@@ -32,18 +32,14 @@ class fail : public basic
 {
 	GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
 	
-	// functions overriding virtual functions from bases classes
-public:
-	void print(const print_context & c, unsigned level = 0) const;
+	// functions overriding virtual functions from base classes
 protected:
-	unsigned return_type(void) const { return return_types::noncommutative_composite; };
-};
+	unsigned return_type() const { return return_types::noncommutative_composite; };
 
-/** Specialization of is_exactly_a<fail>(obj) for fail objects. */
-template<> inline bool is_exactly_a<fail>(const basic & obj)
-{
-	return obj.tinfo()==TINFO_fail;
-}
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+};
 
 } // namespace GiNaC