pqc/external/flint-2.4.3/ulong_extras/primes_jump_after.c
2014-05-24 23:16:06 +02:00

44 lines
1.5 KiB
C

/*=============================================================================
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) 2012 Fredrik Johansson
******************************************************************************/
#include <stdlib.h>
#include "ulong_extras.h"
void
n_primes_jump_after(n_primes_t iter, mp_limb_t n)
{
if (n < iter->small_primes[iter->small_num - 1])
{
iter->small_i = n_prime_pi(n);
iter->sieve_a = iter->sieve_b = iter->sieve_num = 0;
}
else
{
iter->small_i = iter->small_num;
n_primes_sieve_range(iter, n + 1,
n + 1 + FLINT_MIN(n, FLINT_SIEVE_SIZE) - 2);
}
}