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

86 lines
2.3 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) 2010 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "mpn_extras.h"
#include "ulong_extras.h"
void test_exact(int d)
{
int i, j;
ulong exp, exact;
mpz_t a, a2, b, c;
mpz_init(a);
mpz_init(a2);
mpz_init(b);
mpz_init(c);
for (i=0; i<100; i++)
{
for (j=1; j<100; j++)
{
exact = i / j;
flint_mpz_set_ui(a, d);
flint_mpz_pow_ui(a, a, i);
mpz_set(a2, a);
flint_mpz_set_ui(b, d);
flint_mpz_pow_ui(b, b, j);
a->_mp_size = flint_mpn_remove_power_ascending(a->_mp_d, a->_mp_size,
b->_mp_d, b->_mp_size, &exp);
flint_mpz_pow_ui(b, b, exact);
mpz_tdiv_q(c, a2, b);
if (exp != i/j || mpz_cmp(a, c))
{
gmp_printf("%d^%d / %d^%d\n", d, i, d, j);
abort();
}
}
}
mpz_clear(a);
mpz_clear(a2);
mpz_clear(b);
mpz_clear(c);
}
int main(void)
{
FLINT_TEST_INIT(state);
flint_printf("remove_power....");
fflush(stdout);
test_exact(3);
test_exact(10);
test_exact(7429);
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}