/*
Copyright (C) 2022 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 "gr_mat.h"
int gr_mat_invert_rows(gr_mat_t mat, slong * perm, gr_ctx_t ctx)
{
int status = GR_SUCCESS;
slong r = gr_mat_nrows(mat, ctx);
slong i;
for (i = 0; i < r / 2; i++)
status |= gr_mat_swap_rows(mat, perm, i, r - i - 1, ctx);
return status;
}