/*
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 "acb_theta.h"
void
sp2gz_j(fmpz_mat_t mat)
{
slong g = sp2gz_dim(mat);
fmpz_mat_t zero, one, minus_one;
fmpz_mat_init(zero, g, g);
fmpz_mat_init(one, g, g);
fmpz_mat_init(minus_one, g, g);
fmpz_mat_one(one);
fmpz_mat_neg(minus_one, one);
sp2gz_set_blocks(mat, zero, one, minus_one, zero);
fmpz_mat_clear(zero);
fmpz_mat_clear(one);
fmpz_mat_clear(minus_one);
}