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/*
Copyright (C) 2023 Jean Kieffer
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_mat.h"
#include "fmpz_lll.h"
#include "arb_mat.h"
void
arb_mat_spd_lll_reduce(fmpz_mat_t U, const arb_mat_t A, double delta, double eta, slong prec)
{
fmpz_lll_t fl;
fmpz_mat_t N;
slong g = arb_mat_nrows(A);
int r;
if (!arb_mat_is_finite(A))
{
return;
}
fmpz_mat_init(N, g, g);
fmpz_mat_one(U);
r = arb_mat_spd_get_fmpz_mat(N, A, prec);
if (r)
{
/* Default Flint LLL values, except Gram */
fmpz_lll_context_init(fl, delta, eta, GRAM, EXACT);
fmpz_lll(N, U, fl);
}
fmpz_mat_clear(N);
}