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/* Copyright (c) 1997-2020
Ewgenij Gawrilow, Michael Joswig, and the polymake team
Technische Universität Berlin, Germany
https://polymake.org
This program 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 2, or (at your option) any
later version: http://www.gnu.org/licenses/gpl.txt.
This program 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.
--------------------------------------------------------------------------------
*/
#ifndef POLYMAKE_COMMON_FIND_MATRIX_ROW_PERMUTATION_H
#define POLYMAKE_COMMON_FIND_MATRIX_ROW_PERMUTATION_H
#include "polymake/GenericMatrix.h"
#include "polymake/permutations.h"
namespace polymake { namespace common {
template <typename E>
struct matrix_elem_comparator {
typedef operations::cmp type;
};
template <>
struct matrix_elem_comparator<double> {
typedef operations::cmp_with_leeway type;
};
template <typename Matrix1, typename Matrix2, typename E>
optional<Array<Int>>
find_matrix_row_permutation(const GenericMatrix<Matrix1, E>& M1, const GenericMatrix<Matrix2, E>& M2,
bool expect_duplicate_rows = false)
{
if (M1.rows() != M2.rows() || M1.cols() != M2.cols())
return nullopt;
return expect_duplicate_rows
? find_permutation_with_duplicates(rows(M1), rows(M2), typename matrix_elem_comparator<E>::type())
: find_permutation(rows(M1), rows(M2), typename matrix_elem_comparator<E>::type());
}
} }
#endif // POLYMAKE_COMMON_FIND_MATRIX_ROW_PERMUTATION_H
// Local Variables:
// mode:C++
// c-basic-offset:3
// indent-tabs-mode:nil
// End:
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