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/*
Copyright (C) 2020 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 "perm.h"
#include "ca_mat.h"
truth_t
ca_mat_nonsingular_solve_fflu(ca_mat_t X, const ca_mat_t A, const ca_mat_t B, ca_ctx_t ctx)
{
truth_t result;
slong n, m, *perm;
ca_mat_t LU;
ca_t den;
n = ca_mat_nrows(A);
m = ca_mat_ncols(X);
if (n == 0)
return T_TRUE;
perm = _perm_init(n);
ca_mat_init(LU, n, n, ctx);
ca_init(den, ctx);
result = ca_mat_nonsingular_fflu(perm, LU, den, A, ctx);
if (result == T_TRUE && m != 0)
ca_mat_solve_fflu_precomp(X, perm, LU, den, B, ctx);
ca_mat_clear(LU, ctx);
_perm_clear(perm);
ca_clear(den, ctx);
return result;
}