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/* Polyhedron class implementation (non-inline template operators that
may change the dimension of the vector space).
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2013 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/ . */
#ifndef PPL_Polyhedron_chdims_templates_hh
#define PPL_Polyhedron_chdims_templates_hh 1
namespace Parma_Polyhedra_Library {
template <typename Linear_System1, typename Linear_System2>
void
Polyhedron::add_space_dimensions(Linear_System1& sys1,
Linear_System2& sys2,
Bit_Matrix& sat1,
Bit_Matrix& sat2,
dimension_type add_dim) {
PPL_ASSERT(sys1.topology() == sys2.topology());
PPL_ASSERT(sys1.space_dimension() == sys2.space_dimension());
PPL_ASSERT(add_dim != 0);
sys1.set_space_dimension(sys1.space_dimension() + add_dim);
sys2.add_universe_rows_and_space_dimensions(add_dim);
// The resulting saturation matrix will be as follows:
// from row 0 to add_dim-1 : only zeroes
// add_dim add_dim+num_rows-1 : old saturation matrix
// In fact all the old generators saturate all the new constraints
// because the polyhedron has not been embedded in the new space.
sat1.resize(sat1.num_rows() + add_dim, sat1.num_columns());
// The old matrix is moved to the end of the new matrix.
for (dimension_type i = sat1.num_rows() - add_dim; i-- > 0; )
swap(sat1[i], sat1[i+add_dim]);
// Computes the "sat_c", too.
sat2.transpose_assign(sat1);
}
} // namespace Parma_Polyhedra_Library
#endif // !defined(PPL_Polyhedron_chdims_templates_hh)
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