00001 /* Variable class implementation (non-inline functions). 00002 Copyright (C) 2001-2006 Roberto Bagnara <bagnara@cs.unipr.it> 00003 00004 This file is part of the Parma Polyhedra Library (PPL). 00005 00006 The PPL is free software; you can redistribute it and/or modify it 00007 under the terms of the GNU General Public License as published by the 00008 Free Software Foundation; either version 2 of the License, or (at your 00009 option) any later version. 00010 00011 The PPL is distributed in the hope that it will be useful, but WITHOUT 00012 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00013 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00014 for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software Foundation, 00018 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA. 00019 00020 For the most up-to-date information see the Parma Polyhedra Library 00021 site: http://www.cs.unipr.it/ppl/ . */ 00022 00023 #include <config.h> 00024 00025 #include "Variable.defs.hh" 00026 00027 #include <iostream> 00028 00029 namespace PPL = Parma_Polyhedra_Library; 00030 00031 PPL::Variable::output_function_type* 00032 PPL::Variable::current_output_function = 0; 00033 00034 bool 00035 PPL::Variable::OK() const { 00036 return id() < max_space_dimension(); 00037 } 00038 00039 void 00040 PPL::Variable::default_output_function(std::ostream& s, const Variable& v) { 00041 dimension_type varid = v.id(); 00042 s << static_cast<char>('A' + varid % 26); 00043 if (dimension_type i = varid / 26) 00044 s << i; 00045 } 00046 00048 std::ostream& 00049 PPL::IO_Operators::operator<<(std::ostream& s, const Variable& v) { 00050 (*Variable::current_output_function)(s, v); 00051 return s; 00052 }