/* Test Polyhedron::is_universe(): a polyhedron defined by
   a system of constraints containing an equality is not universal.
   Copyright (C) 2001-2004 Roberto Bagnara <bagnara@cs.unipr.it>

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 2 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., 59 Temple Place - Suite 330, 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_test.hh"

using namespace std;
using namespace Parma_Polyhedra_Library;

#ifndef NOISY
#define NOISY 0
#endif

int
main() TRY {
  set_handlers();
  Variable x(0);
  Variable y(1);

  C_Polyhedron ph(2);
  ph.add_constraint(y == 0);
  ph.add_constraint(x >= 1);
  ph.add_constraint(x <= 3);

  ConSys cs = ph.constraints();

#if NOISY
  print_constraints(ph, "--- ph ---");
#endif

  bool universe = ph.is_universe();

#if NOISY
  cout << "*** ph.is_universe() ***"
       << endl
       << (universe ? "true" : "false")
       << endl;
#endif

  return !universe ? 0 : 1;
}
CATCH