pqc/external/flint-2.4.3/fmpz_poly/test/t-evaluate_mod.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
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("evaluate_mod....");
fflush(stdout);
/* Compare with evaluation over the integers */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t b, s;
fmpz_poly_t f;
mp_limb_t a, n, r;
fmpz_poly_init(f);
fmpz_poly_randtest(f, state, n_randint(state, 10), 20);
n = n_randtest_not_zero(state);
a = n_randint(state, n);
fmpz_init(b);
fmpz_init(s);
fmpz_set_ui(b, a);
r = fmpz_poly_evaluate_mod(f, a, n);
fmpz_poly_evaluate_fmpz(s, f, b);
result = (r == fmpz_mod_ui(s, s, n));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(f), flint_printf("\n\n");
gmp_printf("a = %Mu\n\n", a);
gmp_printf("n = %Mu\n\n", n);
gmp_printf("r = %Mu\n\n", r);
flint_printf("s = "), fmpz_print(s), flint_printf("\n\n");
abort();
}
fmpz_poly_clear(f);
fmpz_clear(b);
fmpz_clear(s);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return EXIT_SUCCESS;
}