pqc/external/flint-2.4.3/arith/test/t-primorial.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) 2010 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "flint.h"
#include "arith.h"
#include "ulong_extras.h"
int main(void)
{
ulong k;
fmpz_t x;
fmpz_t y;
FLINT_TEST_INIT(state);
flint_printf("primorial....");
fflush(stdout);
fmpz_init(x);
fmpz_init(y);
fmpz_set_ui(y, 1);
for (k = 0; k < 10000; k++)
{
arith_primorial(x, k);
if (n_is_prime(k))
fmpz_mul_ui(y, y, k);
if (!fmpz_equal(x, y))
{
flint_printf("FAIL:\n");
flint_printf("primorial of %wu disagrees with direct product\n", k);
fmpz_print(x);
flint_printf("\n");
abort();
}
}
fmpz_clear(x);
fmpz_clear(y);
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}