pqc/external/flint-2.4.3/fmpz/test/t-rfac_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) 2012 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("rfac_uiui... ");
fflush(stdout);
/* Check rf(x,a) * rf(x+a,b) = rf(x,a+b) */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t xa, r1, r2, r1r2, r3;
mp_limb_t x;
ulong a, b;
fmpz_init(xa);
fmpz_init(r1);
fmpz_init(r2);
fmpz_init(r1r2);
fmpz_init(r3);
x = n_randlimb(state);
a = n_randint(state, 100);
b = n_randint(state, 100);
fmpz_set_ui(xa, x);
fmpz_add_ui(xa, xa, a);
fmpz_rfac_uiui(r1, x, a);
fmpz_rfac_ui(r2, xa, b);
fmpz_rfac_uiui(r3, x, a+b);
fmpz_mul(r1r2, r1, r2);
result = fmpz_equal(r1r2, r3);
if (!result)
{
flint_printf("FAIL\n\n");
flint_printf("x: %wu", x); flint_printf("\n\n");
flint_printf("a = %wu, b = %wu\n\n", a, b);
flint_printf("rf(x,a): "); fmpz_print(r1); flint_printf("\n\n");
flint_printf("rf(x+a,b): "); fmpz_print(r2); flint_printf("\n\n");
flint_printf("rf(x,a+b): "); fmpz_print(r3); flint_printf("\n\n");
abort();
}
fmpz_clear(xa);
fmpz_clear(r1);
fmpz_clear(r2);
fmpz_clear(r1r2);
fmpz_clear(r3);
}
flint_printf("PASS\n");
FLINT_TEST_CLEANUP(state);
return EXIT_SUCCESS;
}