pqc/external/flint-2.4.3/fmpz/test/t-divexact2_uiui.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
Copyright (C) 2010 Sebastian Pancratz
Copyright (C) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
#include "fmpz.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("divexact2_uiui....");
fflush(stdout);
for (i = 0; i < 10000 * flint_test_multiplier(); i++)
{
fmpz_t a, c;
mpz_t e, f, g;
ulong n, m;
fmpz_init(a);
fmpz_init(c);
mpz_init(e);
mpz_init(f);
mpz_init(g);
fmpz_randtest(a, state, 200);
n = n_randtest_not_zero(state);
m = n_randtest_not_zero(state);
fmpz_mul_ui(c, a, n);
fmpz_mul_ui(c, c, m);
fmpz_get_mpz(e, c);
fmpz_divexact2_uiui(a, c, n, m);
flint_mpz_divexact_ui(f, e, n);
flint_mpz_divexact_ui(f, f, m);
fmpz_get_mpz(g, a);
result = (mpz_cmp(f, g) == 0);
if (!result)
{
flint_printf("FAIL:\n");
gmp_printf("n = %wu, m = %wu, e = %Zd, f = %Zd, g = %Zd\n",
n, m, e, f, g);
abort();
}
fmpz_clear(a);
fmpz_clear(c);
mpz_clear(e);
mpz_clear(f);
mpz_clear(g);
}
/* Test aliasing of a and c */
for (i = 0; i < 10000 * flint_test_multiplier(); i++)
{
fmpz_t a, c;
mpz_t d, f, g;
ulong n, m;
fmpz_init(a);
fmpz_init(c);
mpz_init(d);
mpz_init(f);
mpz_init(g);
fmpz_randtest(a, state, 200);
n = n_randtest_not_zero(state);
m = n_randtest_not_zero(state);
fmpz_mul_ui(c, a, n);
fmpz_mul_ui(c, c, m);
fmpz_get_mpz(d, c);
fmpz_divexact2_uiui(c, c, n, m);
flint_mpz_divexact_ui(f, d, n);
flint_mpz_divexact_ui(f, f, m);
fmpz_get_mpz(g, c);
result = (mpz_cmp(f, g) == 0);
if (!result)
{
flint_printf("FAIL:\n");
gmp_printf("d = %Zd, n = %wu, m = %wu, f = %Zd, g = %Zd\n",
d, n, m, f, g);
abort();
}
fmpz_clear(a);
fmpz_clear(c);
mpz_clear(d);
mpz_clear(f);
mpz_clear(g);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}