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/*
Copyright (C) 2016 Fredrik Johansson
This file is part of Arb.
Arb 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 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "mag.h"
void
mag_hurwitz_zeta_uiui(mag_t res, ulong s, ulong a)
{
if (s <= 1 || a == 0)
{
mag_inf(res);
}
else
{
mag_t t, u;
mag_init(t);
mag_init(u);
mag_one(t);
mag_set_ui_lower(u, a);
mag_pow_ui_lower(u, u, s - 1);
mag_mul_ui_lower(res, u, a);
mag_div(res, t, res);
mag_mul_ui_lower(u, u, s - 1);
mag_div(u, t, u);
mag_add(res, res, u);
mag_clear(t);
mag_clear(u);
}
}
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