pqc/external/flint-2.4.3/ulong_extras/primes_arr_readonly.c

45 lines
1.4 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) 2013 Fredrik Johansson
******************************************************************************/
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
const mp_limb_t * n_primes_arr_readonly(ulong num_primes)
{
int m;
if (num_primes < 1)
return NULL;
m = FLINT_CLOG2(num_primes);
if (m >= _flint_primes_used)
n_compute_primes(num_primes);
return _flint_primes[m];
}