2
** Author(s): Tom Schrijvers
3
** Contact: xsb-contact@cs.sunysb.edu
5
** Copyright (C) ECRC 1990
7
** XSB is free software; you can redistribute it and/or modify it under the
8
** terms of the GNU Library General Public License as published by the Free
9
** Software Foundation; either version 2 of the License, or (at your option)
12
** XSB is distributed in the hope that it will be useful, but WITHOUT ANY
13
** WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14
** FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for
17
** You should have received a copy of the GNU Library General Public License
18
** along with XSB; if not, write to the Free Software Foundation,
19
** Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21
** $Id: freeze.chr,v 1.2 2003/10/03 14:50:37 tschrijvers Exp $
24
:- chr_module(freeze).
26
:- constraints freeze/2.
28
freeze(X,G) <=> nonvar(X) | call(G).