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

72 lines
2.0 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) 2009 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
int main(void)
{
int i, j, result;
FLINT_TEST_INIT(state);
flint_printf("factor_partial....");
fflush(stdout);
for (i = 0; i < 1000 * flint_test_multiplier(); i++) /* Test random numbers */
{
mp_limb_t n1, n2, prod, limit;
n_factor_t factors;
n_factor_init(&factors);
n1 = n_randtest_not_zero(state);
limit = n_sqrt(n1);
n2 = n_factor_partial(&factors, n1, limit, 0);
prod = 1;
for (j = 0; j < factors.num; j++)
{
prod *= n_pow(factors.p[j], factors.exp[j]);
}
result = ((n1 == n2*prod) && ((prod > limit) || (n1 == 1)));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("n1 = %wu, n2 = %wu\n", n1, n2);
abort();
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}