pqc/external/flint-2.4.3/ulong_extras/test/t-nextprime.c

91 lines
2.4 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) 2007, 2008 William Hart
Copyright (C) 2008 Peter Shrimpton
Copyright (C) 2010 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
int main(void)
{
mp_limb_t n;
mp_limb_t res1, res2;
slong i, rep;
mpz_t mpz_n;
FLINT_TEST_INIT(state);
flint_printf("nextprime....");
fflush(stdout);
if (n_nextprime(0, 0) != 2)
{
flint_printf("FAIL: expected n_nextprime(0) = 2");
abort();
}
if (n_nextprime(UWORD_MAX_PRIME - 1, 0) != UWORD_MAX_PRIME)
{
flint_printf("FAIL: expected n_nextprime(UWORD_MAX_PRIME-1) = UWORD_MAX_PRIME");
abort();
}
mpz_init(mpz_n);
for (rep = 0; rep < 10000 * flint_test_multiplier(); rep++)
{
ulong bits = n_randint(state, FLINT_D_BITS-1)+1;
n = n_randtest(state) % ((UWORD(1)<<bits) - UWORD(1)) + 1;
flint_mpz_set_ui(mpz_n, n);
for (i = 0; i < 1; i++)
{
mpz_nextprime(mpz_n, mpz_n);
n = n_nextprime(n, 0);
}
res1 = n;
res2 = flint_mpz_get_ui(mpz_n);
if (res1 != res2)
{
flint_printf("FAIL:\n");
flint_printf("%wu, %wu\n", res1, res2);
abort();
}
}
mpz_clear(mpz_n);
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}