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/* Test Octagonal_Shape::is_empty() .
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2016 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://bugseng.com/products/ppl/ . */
#include "ppl_test.hh"
namespace {
bool
test01() {
Variable A(0);
Variable B(1);
TOctagonal_Shape oc1(2, EMPTY);
bool empty1 = oc1.is_empty();
nout << "*** oc1.is_empty() ***" << endl;
nout << (empty1 ? "true" : "false ") << endl;
TOctagonal_Shape oc2(2, UNIVERSE);
bool empty2 = oc2.is_empty();
nout << "*** oc2.is_empty() ***" << endl;
nout << (empty2 ? "true" : "false") << endl;
return empty1 && !empty2;
}
bool
test02() {
Variable A(0);
Variable B(1);
Variable C(2);
TOctagonal_Shape oc(3);
oc.add_constraint(A == 0);
oc.add_constraint(C >= 0);
oc.add_constraint(B - C >= 1);
print_constraints(oc, "*** oc ***");
bool empty = oc.is_empty();
nout << "*** oc.is_empty() ***" << endl;
nout << (empty ? "true" : "false") << endl;
return !empty;
}
bool
test03() {
Variable A(0);
Variable B(1);
Variable C(2);
Variable D(3);
Variable E(4);
TOctagonal_Shape oc1(5);
oc1.add_constraint(A <= 3);
oc1.add_constraint(D <= 3);
oc1.add_constraint(B - A <= 0);
oc1.add_constraint(C - A <= -2);
oc1.add_constraint(E - A <= 2);
oc1.add_constraint(-B <= 0);
oc1.add_constraint(C - B <= 5);
oc1.add_constraint(D - C <= -6);
oc1.add_constraint(A - D <= 5);
oc1.add_constraint(E - D <= 2);
oc1.add_constraint(-E <= -5);
oc1.add_constraint(C - E <= 7);
print_constraints(oc1, "*** oc1 ***");
bool empty = oc1.is_empty();
nout << "*** oc1.is_empty() ***" << endl;
nout << (empty ? "true" : "false") << endl;
TOctagonal_Shape oc2(5);
oc2.add_constraint(A <= 3);
oc2.add_constraint(D <= 3);
oc2.add_constraint(B - A <= 0);
oc2.add_constraint(C - A <= 2);
oc2.add_constraint(E - A <= 2);
oc2.add_constraint(-B <= 0);
oc2.add_constraint(C - B <= 5);
oc2.add_constraint(D - C <= 6);
oc2.add_constraint(A - D <= 5);
oc2.add_constraint(E - D <= 2);
oc2.add_constraint(-E <= 5);
oc2.add_constraint(C - E <= 7);
print_constraints(oc2, "*** oc2 ***");
bool empty1 = oc2.is_empty();
nout << "*** oc2.is_empty() ***" << endl;
nout << (empty1 ? "true" : "false") << endl;
return empty && !empty1;
}
} // namespace
BEGIN_MAIN
DO_TEST(test01);
DO_TEST(test02);
DO_TEST(test03);
END_MAIN
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