/*
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 "acb_theta.h"
ulong
acb_theta_char_get_a(const slong * n, slong g)
{
slong k;
ulong a = 0;
for (k = 0; k < g; k++)
{
a *= 2;
a += ((n[k] % 2) + 2) % 2;
}
return a;
}