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/* Test Grid::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 {
// One dimension.
bool
test01() {
Grid gr(1, EMPTY);
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Many dimensions.
bool
test02() {
Grid gr(6, EMPTY);
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Zero dimension empty.
bool
test03() {
Grid gr(0, EMPTY);
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Zero dimension universe.
bool
test04() {
Grid gr(0);
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Universe grid.
bool
test05() {
Grid gr(2);
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Grid of congruences.
bool
test06() {
Variable A(0);
Variable B(1);
Variable C(2);
Congruence_System cgs;
cgs.insert((A + B + C %= 0) / 3);
Grid gr(cgs);
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Empty grid of congruences.
bool
test07() {
Variable C(2);
Congruence_System cgs;
cgs.insert((0*C %= 4) / 3);
Grid gr(cgs);
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Grid of generators.
bool
test08() {
Variable A(0);
Variable E(4);
Grid_Generator_System gs;
gs.insert(grid_point(A + 3*E));
Grid gr(gs);
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Universe grid of generators.
bool
test09() {
Variable A(0);
Variable B(1);
Variable C(2);
Variable D(3);
Variable E(4);
Grid_Generator_System gs;
gs.insert(grid_point(A + 3*E));
gs.insert(grid_line(A));
gs.insert(grid_line(B));
gs.insert(grid_line(C));
gs.insert(grid_line(D));
gs.insert(grid_line(E));
Grid gr(5);
gr.add_grid_generators(gs);
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Minimized congruences.
bool
test10() {
Variable A(0);
Variable B(1);
Variable C(2);
Congruence_System cgs;
cgs.insert((A + B + C %= 0) / 3);
Grid gr(cgs);
// Minimize the congruences.
gr.minimized_congruences();
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Minimized empty congruences.
bool
test11() {
Variable C(2);
Congruence_System cgs;
cgs.insert((0*C %= 4) / 3);
Grid gr(cgs);
// Minimize the congruences.
gr.minimized_congruences();
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Minimized universe congruences.
bool
test12() {
Variable C(2);
Congruence_System cgs;
cgs.insert((0*C %= 4) / 2);
Grid gr(cgs);
// Minimize the congruences.
gr.minimized_congruences();
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Universe after remove_space_dimensions.
bool
test13() {
Variable A(0);
Variable C(2);
Congruence_System cgs;
cgs.insert((A + 0*C %= 4) / 2);
Grid gr(cgs);
Variables_Set vars;
vars.insert(A);
gr.remove_space_dimensions(vars);
// Minimize the congruences.
gr.minimized_congruences();
bool ok = (!gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
// Empty from a simple constraint.
bool
test14() {
Variable C(2);
Congruence_System cgs;
cgs.insert(0*C == 1);
Grid gr(cgs);
// Minimize the congruences.
bool ok = (gr.is_empty());
print_congruences(gr, "*** gr ***");
return ok;
}
} // namespace
BEGIN_MAIN
DO_TEST(test01);
DO_TEST(test02);
DO_TEST(test03);
DO_TEST(test04);
DO_TEST(test05);
DO_TEST(test06);
DO_TEST(test07);
DO_TEST(test08);
DO_TEST(test09);
DO_TEST(test10);
DO_TEST(test11);
DO_TEST(test12);
DO_TEST(test13);
DO_TEST(test14);
END_MAIN
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