pqc/external/flint-2.4.3/ulong_extras/test/t-remove2_precomp.c

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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) 2009 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
int main(void)
{
int i, result;
const mp_limb_t * primes;
const double * inverses;
FLINT_TEST_INIT(state);
flint_printf("remove2_precomp....");
fflush(stdout);
primes = n_primes_arr_readonly(10000);
inverses = n_prime_inverses_arr_readonly(10000);
for (i = 0; i < 10000 * flint_test_multiplier(); i++) /* Test random numbers */
{
mp_limb_t n1, n2, orig_n;
mpz_t d_n2, d_n1, d_p;
int exp1, exp2;
ulong j;
mpz_init(d_n1);
mpz_init(d_n2);
mpz_init(d_p);
n1 = n_randtest_not_zero(state);
orig_n = n1;
for (j = 0; j < FLINT_NUM_PRIMES_SMALL/10; j++)
{
flint_mpz_set_ui(d_n1, n1);
flint_mpz_set_ui(d_p, flint_primes_small[j]);
exp1 = n_remove2_precomp(&n1, primes[j], inverses[j]);
exp2 = mpz_remove(d_n2, d_n1, d_p);
n2 = flint_mpz_get_ui(d_n2);
result = ((exp1 == exp2) && (n1 == n2));
if (!result)
{
flint_printf("FAIL\n");
flint_printf("n = %wu, exp1 = %d, exp2 = %d, n1 = %wu, n2 = %wu, p = %d\n", orig_n, exp1, exp2, n1, n2, flint_primes_small[j]);
abort();
}
}
mpz_clear(d_n1);
mpz_clear(d_n2);
mpz_clear(d_p);
}
for (i = 0; i < 10000 * flint_test_multiplier(); i++) /* Test perfect powers */
{
mp_limb_t n1, n2, orig_n, base;
mpz_t d_n2, d_n1, d_p;
int exp1, exp2, exp;
ulong j;
mpz_init(d_n1);
mpz_init(d_n2);
mpz_init(d_p);
base = n_randtest_not_zero(state);
n1 = base;
exp = n_randint(state, FLINT_BITS/FLINT_BIT_COUNT(n1)) + 1;
n1 = n_pow(base, exp);
orig_n = n1;
for (j = 0; j < FLINT_NUM_PRIMES_SMALL/10; j++)
{
flint_mpz_set_ui(d_n1, n1);
flint_mpz_set_ui(d_p, flint_primes_small[j]);
exp1 = n_remove2_precomp(&n1, primes[j], inverses[j]);
exp2 = mpz_remove(d_n2, d_n1, d_p);
n2 = flint_mpz_get_ui(d_n2);
result = ((exp1 == exp2) && (n1 == n2));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("n = %wu, exp1 = %d, exp2 = %d, n1 = %wu, n2 = %wu, p = %d\n", orig_n, exp1, exp2, n1, n2, flint_primes_small[j]);
abort();
}
}
mpz_clear(d_n1);
mpz_clear(d_n2);
mpz_clear(d_p);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}