3 * Interface to class signaling failure of operation. Considered obsolete
4 * somewhat obsolete (most of this can be replaced by exceptions). */
7 * GiNaC Copyright (C) 1999-2002 Johannes Gutenberg University Mainz, Germany
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #ifndef __GINAC_FAIL_H__
25 #define __GINAC_FAIL_H__
31 class fail : public basic
33 GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
35 // functions overriding virtual functions from base classes
37 void print(const print_context & c, unsigned level = 0) const;
39 unsigned return_type(void) const { return return_types::noncommutative_composite; };
42 /** Specialization of is_exactly_a<fail>(obj) for fail objects. */
43 template<> inline bool is_exactly_a<fail>(const basic & obj)
45 return obj.tinfo()==TINFO_fail;
50 #endif // ndef __GINAC_FAIL_H__