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/* Test Polyhedron::H79_widening_assign().
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_test.hh"
namespace {
// This is the example of Figure 3 in [BagnaraRZH02TR].
bool
test01() {
Variable A(0);
NNC_Polyhedron ph1(1);
ph1.add_constraint(A > 0);
ph1.add_constraint(A < 2);
NNC_Polyhedron ph4(1);
ph4.add_constraint(4*A >= 1);
ph4.add_constraint(4*A <= 3);
NNC_Polyhedron ph = ph4;
ph.intersection_assign(ph1);
// At this point, ph and ph4 are two different representations
// of the same NNC polyhedron.
print_constraints(ph4, "*** ph4 ***");
print_constraints(ph, "*** ph ***");
NNC_Polyhedron known_result(ph4);
ph.H79_widening_assign(ph4);
bool ok = (ph == known_result);
print_constraints(ph, "*** after H79_widening_assign ***");
return ok;
}
} // namespace
BEGIN_MAIN
DO_TEST(test01);
END_MAIN
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