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/*
Copyright (C) 2011 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "fmpz.h"
#include "fmpz_mat.h"
#include "fmpq_mat.h"
int
fmpq_mat_solve_fmpz_mat_fraction_free(fmpq_mat_t X, const fmpz_mat_t A,
const fmpz_mat_t B)
{
fmpz_mat_t Xnum;
fmpz_t den;
int success;
fmpz_mat_init(Xnum, B->r, B->c);
fmpz_init(den);
/* call solve instead of solve_fflu explicitly because we also want
to use cramer where applicable */
success = fmpz_mat_solve(Xnum, den, A, B);
if (success)
fmpq_mat_set_fmpz_mat_div_fmpz(X, Xnum, den);
fmpz_mat_clear(Xnum);
fmpz_clear(den);
return success;
}
int
fmpq_mat_solve_fraction_free(fmpq_mat_t X, const fmpq_mat_t A,
const fmpq_mat_t B)
{
fmpz_mat_t Anum;
fmpz_mat_t Bnum;
fmpz_mat_t Xnum;
fmpz_t den;
int success;
fmpz_mat_init(Anum, A->r, A->c);
fmpz_mat_init(Bnum, B->r, B->c);
fmpz_mat_init(Xnum, B->r, B->c);
fmpz_init(den);
fmpq_mat_get_fmpz_mat_rowwise_2(Anum, Bnum, NULL, A, B);
/* call solve instead of solve_fflu explicitly because we also want
to use cramer where applicable */
success = fmpz_mat_solve(Xnum, den, Anum, Bnum);
if (success)
fmpq_mat_set_fmpz_mat_div_fmpz(X, Xnum, den);
fmpz_mat_clear(Anum);
fmpz_mat_clear(Bnum);
fmpz_mat_clear(Xnum);
fmpz_clear(den);
return success;
}