mirror of
https://github.com/vale981/arb
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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*=============================================================================
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This file is part of ARB.
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ARB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2016 Fredrik Johansson
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******************************************************************************/
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#include "mag.h"
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void
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mag_hurwitz_zeta_uiui(mag_t res, ulong s, ulong a)
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{
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if (s <= 1 || a == 0)
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{
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mag_inf(res);
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}
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else
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{
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mag_t t, u;
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mag_init(t);
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mag_init(u);
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mag_one(t);
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mag_set_ui_lower(u, a);
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mag_pow_ui_lower(u, u, s - 1);
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mag_mul_ui_lower(res, u, a);
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mag_div(res, t, res);
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mag_mul_ui_lower(u, u, s - 1);
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mag_div(u, t, u);
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mag_add(res, res, u);
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mag_clear(t);
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mag_clear(u);
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}
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}
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