Module: ppl/ppl Branch: floating_point Commit: 360425ce18d40049ad6a3bcc581b1f551eb1fdac URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=360425ce18d40...
Author: Roberto Amadini r.amadini@virgilio.it Date: Thu Sep 24 16:12:32 2009 +0200
Added some tests in tests/Floating_Point_Expression/polyhedron1.cc
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tests/Floating_Point_Expression/polyhedron1.cc | 287 ++++++++++++++++++++++++ 1 files changed, 287 insertions(+), 0 deletions(-)
diff --git a/tests/Floating_Point_Expression/polyhedron1.cc b/tests/Floating_Point_Expression/polyhedron1.cc new file mode 100644 index 0000000..601c82b --- /dev/null +++ b/tests/Floating_Point_Expression/polyhedron1.cc @@ -0,0 +1,287 @@ +/* Test Polyhedron::affine_image() on interval linear forms. + Copyright (C) 2001-2009 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 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 { + +// tests ph.affine_image(B, 3, store) +bool +test01() { + Variable A(0); + Variable B(1); + Variable C(2); + FP_Interval_Abstract_Store store(3); + FP_Interval tmp(0); + store.set_interval(B, tmp); + tmp.lower() = -2; + tmp.upper() = 2; + store.set_interval(A, tmp); + tmp.lower() = -1; + tmp.upper() = 1; + store.set_interval(C, tmp); + C_Polyhedron ph(3); + ph.add_constraint(C == 0); + ph.add_constraint(A == -2); + tmp = 3; + FP_Linear_Form l(tmp); + + ph.affine_image(B, l, store); + print_constraints(ph, "*** ph.affine_image(B, 3, store) ***"); + + C_Polyhedron known_result(3, EMPTY); + known_result.add_generator(point(-2 * A + 3 * B)); + print_constraints(known_result, "*** know_result ***"); + + bool ok = (ph == known_result); + return ok; +} + +// tests ph.affine_image(A, A + B + 1, store) +bool +test02() { + Variable A(0); + Variable B(1); + FP_Interval_Abstract_Store store(2); + FP_Interval tmp(1); + store.set_interval(A, tmp); + store.set_interval(B, tmp); + C_Polyhedron ph(2); + ph.add_constraint(A >= B); + ph.add_constraint(B >= 0); + ph.add_constraint(A <= 3); + FP_Linear_Form l(A); + l += B; + l += tmp; + ph.affine_image(A, l, store); + print_constraints(ph, "*** ph.affine_image(A, A + B + 1, store) ***"); + + C_Polyhedron known_result(2); + known_result.add_constraint(A - 2*B - 1 >= 0); + known_result.add_constraint(B >= 0); + known_result.add_constraint(A - B <= 4); + print_constraints(known_result, "*** known_result ***"); + + bool ok = (ph == known_result); + + return ok; +} + +// tests ph.affine_image(A, (A + 1) / 2, store) +bool +test03() { + Variable A(0); + Variable B(1); + FP_Interval_Abstract_Store store(2); + FP_Interval tmp(1 / 2.0); + store.set_interval(A, tmp); + store.set_interval(B, tmp); + Generator_System gs; + gs.insert(point()); + gs.insert(ray(A)); + gs.insert(ray(B)); + C_Polyhedron ph(gs); + FP_Linear_Form l(A); + l *= tmp; + l += tmp; + ph.affine_image(A, l, store); + print_constraints(ph, "*** ph.affine_image(A, (A + 1) / 2, store) ***"); + + C_Polyhedron known_result(2); + known_result.add_constraint(2*A >= 1); + known_result.add_constraint(B >= 0); + print_constraints(known_result, "*** known_result ***"); + + bool ok = (ph == known_result); + + return ok; +} + +// tests ph.affine_image(A, (B + 2) / (-3), store) +// FIXME: not passes at the moment. +bool +test04() { + Variable A(0); + Variable B(1); + FP_Interval_Abstract_Store store(2); + FP_Interval tmp(-1 / 3.0); + store.set_interval(A, tmp); + store.set_interval(B, tmp); + C_Polyhedron ph(2, EMPTY); + ph.add_generator(point(A)); + FP_Linear_Form l(B); + l *= tmp; + tmp += tmp; + l += tmp; + ph.affine_image(A, l, store); + print_constraints(ph, "*** ph.affine_image(A, (B + 2) / (-3), store) ***"); + + C_Polyhedron known_result(2, EMPTY); + known_result.add_generator(point(-2*A, 3)); + print_constraints(known_result, "*** known_result ***"); + + bool ok = (ph == known_result); + + return ok; +} +/* +bool +test05() { + Variable A(0); + Variable B(1); + + C_Polyhedron ph(2); + ph.add_constraint(A >= 2); + ph.add_constraint(A <= 3); + ph.add_constraint(B >= 1); + ph.add_constraint(2*A >= B); + + print_constraints(ph, "*** ph ***"); + + ph.affine_image(B, A-B+2, -3); + + C_Polyhedron known_result(2, EMPTY); + known_result.add_generator(point(2*A)); + known_result.add_generator(point(2*A - B)); + known_result.add_generator(point(9*A + B, 3)); + known_result.add_generator(point(9*A - 4*B, 3)); + + bool ok = (ph == known_result); + + print_generators(ph, "*** ph after ph.affine_image(B, A-B+2, -3) ***"); + + return ok; +} + +bool +test06() { + Variable A(0); + Variable B(1); + + C_Polyhedron ph1(2, EMPTY); + + print_constraints(ph1, "*** ph1 ***"); + + ph1.affine_image(A, 2*A + B + 1); + + C_Polyhedron known_result(2, EMPTY); + + bool ok = (ph1 == known_result); + + print_constraints(ph1, "*** after ph1.affine_image(A, 2*A + B + 1) ***"); + + return ok; +} + +bool +test07() { + Variable A(0); + Variable B(1); + + Generator_System gs; + gs.insert(point()); + gs.insert(point(A)); + gs.insert(point(B)); + gs.insert(point(A + B)); + C_Polyhedron ph(gs); + + print_generators(ph, "*** ph ***"); + + ph.affine_image(A, -A - 1, -1); + + Generator_System known_gs; + known_gs.insert(point(A)); + known_gs.insert(point(2*A)); + known_gs.insert(point(A + B)); + known_gs.insert(point(2*A + B)); + C_Polyhedron known_result(known_gs); + + bool ok = (ph == known_result); + + print_generators(ph, "*** after ph.affine_image(A, -A - 1, -1) ***"); + + return ok; +} + +bool +test08() { + Variable A(0); + Variable B(1); + + C_Polyhedron ph(2); + ph.generators(); + ph.add_constraint(A >= 0); + ph.add_constraint(B >= 0); + C_Polyhedron copy_ph(ph); + + print_constraints(ph, "*** ph ***"); + + ph.affine_image(A, A + 1); + copy_ph.affine_image(A, -A - 1, -1); + + bool ok = (ph == copy_ph); + + print_generators(ph, "*** after ph.affine_image(A, A + 1) ***"); + print_generators(copy_ph, + "*** after copy_ph.affine_image(A, -A - 1, -1) ***"); + + return ok; +} + +bool +test09() { + Variable A(0); + Variable B(1); + + C_Polyhedron ph(2); + ph.generators(); + ph.add_constraint(A >= 0); + ph.add_constraint(B >= 0); + C_Polyhedron copy_ph(ph); + + print_constraints(ph, "*** ph ***"); + + ph.affine_image(B, A + 1); + copy_ph.affine_image(B, -A - 1, -1); + + bool ok = (ph == copy_ph); + + print_generators(ph, "*** after ph.affine_image(B, A + 1) ***"); + print_generators(copy_ph, + "*** after copy_ph.affine_image(B, -A - 1, -1) ***"); + + 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); */ +END_MAIN