/* Test Grid::affine_dimension().
   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 {

// Empty.
bool
test01() {
  Grid gr(7, EMPTY);

  bool ok = (gr.affine_dimension() == 0);

  print_congruences(gr, "*** gr**");

  return ok;
}

// Zero dimension empty.
bool
test02() {
  Grid gr(0, EMPTY);

  bool ok = (gr.affine_dimension() == 0);

  print_congruences(gr, "*** gr**");

  return ok;
}

// Zero dimension universe.
bool
test03() {
  Grid gr(0);

  bool ok = (gr.affine_dimension() == 0);

  print_congruences(gr, "*** gr**");

  return ok;
}

// Point.
bool
test04() {
  Variable A(0);
  Variable B(1);

  Grid gr_gs_min(2, EMPTY);
  gr_gs_min.add_grid_generator(grid_point(3*A + 2*B));

  Grid gr_gs_needs_min(2, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 2*B));

  Grid gr_cgs_needs_min(2);
  gr_cgs_needs_min.add_congruence((A == 3) / 0);
  gr_cgs_needs_min.add_congruence((B == 2) / 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 0
    && gr_gs_needs_min.affine_dimension() == 0
    && gr_cgs_needs_min.affine_dimension() == 0;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Line.
bool
test05() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(3, EMPTY);
  gr_gs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_min.add_grid_generator(grid_line(C));

  Grid gr_gs_needs_min(3, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_needs_min.add_grid_generator(grid_line(C));

  Grid gr_cgs_needs_min(3);
  gr_cgs_needs_min.add_congruence((A == 3) / 0);
  gr_cgs_needs_min.add_congruence((B == 2) / 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 1
    && gr_gs_needs_min.affine_dimension() == 1
    && gr_cgs_needs_min.affine_dimension() == 1;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Rectilinear.
bool
test06() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(3, EMPTY);
  gr_gs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_min.add_grid_generator(grid_point(3*A + B));

  Grid gr_gs_needs_min(3, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + B));

  Grid gr_cgs_needs_min(3);
  gr_cgs_needs_min.add_congruence((A == 3) / 0);
  gr_cgs_needs_min.add_congruence(B %= 0);
  gr_cgs_needs_min.add_congruence((C == 0) / 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 1
    && gr_gs_needs_min.affine_dimension() == 1
    && gr_cgs_needs_min.affine_dimension() == 1;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Rectilinear with lines.
bool
test07() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(3, EMPTY);
  gr_gs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_min.add_grid_generator(grid_point(3*A + B));
  gr_gs_min.add_grid_generator(grid_line(C));

  Grid gr_gs_needs_min(3, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 2*B));
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + B));
  gr_gs_needs_min.add_grid_generator(grid_line(C));

  Grid gr_cgs_needs_min(3);
  gr_cgs_needs_min.add_congruence((A == 3) / 0);
  gr_cgs_needs_min.add_congruence(B %= 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 2
    && gr_gs_needs_min.affine_dimension() == 2
    && gr_cgs_needs_min.affine_dimension() == 2;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Skew.
bool
test08() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(2, EMPTY);
  gr_gs_min.add_grid_generator(grid_point());
  gr_gs_min.add_grid_generator(grid_point(A));
  gr_gs_min.add_grid_generator(grid_point(3*A + 3*B, 4));

  Grid gr_gs_needs_min(2, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point());
  gr_gs_needs_min.add_grid_generator(grid_point(A));
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 3*B, 4));

  Grid gr_cgs_needs_min(2);
  gr_cgs_needs_min.add_congruence((4*B %= 0) / 3);
  gr_cgs_needs_min.add_congruence(A - B %= 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 2
    && gr_gs_needs_min.affine_dimension() == 2
    && gr_cgs_needs_min.affine_dimension() == 2;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Skew with lines.
bool
test09() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(3, EMPTY);
  gr_gs_min.add_grid_generator(grid_point());
  gr_gs_min.add_grid_generator(grid_point(A));
  gr_gs_min.add_grid_generator(grid_line(C));
  gr_gs_min.add_grid_generator(grid_point(3*A + 3*B, 4));

  Grid gr_gs_needs_min(3, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point());
  gr_gs_needs_min.add_grid_generator(grid_point(A));
  gr_gs_needs_min.add_grid_generator(grid_line(C));
  gr_gs_needs_min.add_grid_generator(grid_point(3*A + 3*B, 4));

  Grid gr_cgs_needs_min(3);
  gr_cgs_needs_min.add_congruence((4*B %= 0) / 3);
  gr_cgs_needs_min.add_congruence(A - B %= 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 3
    && gr_gs_needs_min.affine_dimension() == 3
    && gr_cgs_needs_min.affine_dimension() == 3;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  return ok;
}

// Plane.
bool
test10() {
  Variable A(0);
  Variable B(1);
  Variable C(2);
  Variable D(3);

  Grid gr_gs_min(4, EMPTY);
  gr_gs_min.add_grid_generator(grid_point());
  gr_gs_min.add_grid_generator(grid_line(B));
  gr_gs_min.add_grid_generator(grid_line(C));

  Grid gr_gs_needs_min(4, EMPTY);
  gr_gs_needs_min.add_grid_generator(grid_point());
  gr_gs_needs_min.add_grid_generator(grid_line(B));
  gr_gs_needs_min.add_grid_generator(grid_line(C));

  Grid gr_cgs_needs_min(4);
  gr_cgs_needs_min.add_congruence((A == 0) / 0);
  gr_cgs_needs_min.add_congruence((D == 0) / 0);

  // Grids gr_gs_min, gr_gs_needs_min and gr_cgs_needs_min are the
  // same grids.

  bool ok = gr_gs_min.affine_dimension() == 2
    && gr_gs_needs_min.affine_dimension() == 2
    && gr_cgs_needs_min.affine_dimension() == 2;

  print_congruences(gr_gs_min, "*** gr_gs_min **");
  print_congruences(gr_gs_needs_min, "*** gr_gs_needs_min **");
  print_congruences(gr_cgs_needs_min, "*** gr_cgs_needs_min **");

  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);
END_MAIN
