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/* Copyright (c) 1997-2024
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.
--------------------------------------------------------------------------------
*/
#pragma once
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wshadow"
#pragma clang diagnostic ignored "-Wconversion"
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
#elif defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wshadow"
#pragma GCC diagnostic ignored "-Wconversion"
#pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
#endif
#include <flint/nmod_mat.h>
#include <flint/fmpz.h>
#if defined(__clang__)
#pragma clang diagnostic pop
#elif defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#include "polymake/Integer.h"
#include "polymake/Matrix.h"
namespace polymake {
namespace common {
namespace flint {
template <typename MatrixType>
void matrix_to_nmod_mat_t(nmod_mat_t& result, const GenericMatrix<MatrixType>& m, const Int p) {
auto intmat = convert_to<Integer>(m);
nmod_mat_init(result, intmat.rows(), intmat.cols(), p);
for (auto r = entire<indexed>(rows(intmat)); !r.at_end(); ++r) {
for (auto e = entire<indexed>(*r); !e.at_end(); ++e) {
long int entry = *e % p;
if (entry < 0) {
entry += p;
}
nmod_mat_entry(result, r.index(), e.index()) = entry;
}
}
}
} // namespace flint
template <typename MatrixType>
mp_limb_signed_t rank_mod_p(const GenericMatrix<MatrixType>& m, const Int p) {
nmod_mat_t in;
flint::matrix_to_nmod_mat_t(in, m, p);
mp_limb_signed_t rank = nmod_mat_rank(in);
nmod_mat_clear(in);
return rank;
}
} // namespace common
} // namespace polymake
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