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https://github.com/vale981/arb
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37 lines
913 B
C
37 lines
913 B
C
/*
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Copyright (C) 2012 Fredrik Johansson
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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 it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "bernoulli.h"
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void
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_bernoulli_fmpq_ui(fmpz_t num, fmpz_t den, ulong n)
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{
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if (n < (ulong) bernoulli_cache_num)
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{
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fmpz_set(num, fmpq_numref(bernoulli_cache + n));
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fmpz_set(den, fmpq_denref(bernoulli_cache + n));
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}
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else if (n < 18000 || n % 2 == 1)
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{
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_bernoulli_fmpq_ui_zeta(num, den, n);
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}
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else
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{
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_bernoulli_fmpq_ui_multi_mod(num, den, n, -1.0);
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}
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}
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void
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bernoulli_fmpq_ui(fmpq_t b, ulong n)
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{
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_bernoulli_fmpq_ui(fmpq_numref(b), fmpq_denref(b), n);
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}
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