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/* Variable class implementation (non-inline functions).
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)
This file is part of the Parma Polyhedra Library (PPL).
The PPL is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The PPL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */
#include <ppl-config.h>
#include "Variable.defs.hh"
#include <iostream>
namespace PPL = Parma_Polyhedra_Library;
PPL::Variable::output_function_type*
PPL::Variable::current_output_function = 0;
bool
PPL::Variable::OK() const {
return id() < max_space_dimension();
}
void
PPL::Variable::default_output_function(std::ostream& s, const Variable& v) {
dimension_type varid = v.id();
s << static_cast<char>('A' + varid % 26);
if (dimension_type i = varid / 26)
s << i;
}
/*! \relates Parma_Polyhedra_Library::Variable */
std::ostream&
PPL::IO_Operators::operator<<(std::ostream& s, const Variable& v) {
(*Variable::current_output_function)(s, v);
return s;
}
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