pqc/external/flint-2.4.3/arith/bernoulli_number_vec.c

60 lines
1.8 KiB
C
Raw Normal View History

2014-05-18 22:03:37 +00:00
/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2011 Fredrik Johansson
******************************************************************************/
#include "arith.h"
void _arith_bernoulli_number_vec(fmpz * num, fmpz * den, slong n)
{
if (n < 700)
_arith_bernoulli_number_vec_recursive(num, den, n);
else if (n < 3900)
_arith_bernoulli_number_vec_zeta(num, den, n);
else
_arith_bernoulli_number_vec_multi_mod(num, den, n);
}
void arith_bernoulli_number_vec(fmpq * x, slong n)
{
fmpz * num, * den;
slong i;
if (n <= 0)
return;
num = _fmpz_vec_init(n * 2);
den = num + n;
_arith_bernoulli_number_vec(num, den, n);
for (i = 0; i < n; i++)
{
fmpz_swap(num + i, fmpq_numref(x + i));
fmpz_swap(den + i, fmpq_denref(x + i));
}
_fmpz_vec_clear(num, n * 2);
}