pqc/external/flint-2.4.3/ulong_extras/test/t-prime_pi.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 "ulong_extras.h"
int main(void)
{
int n;
FLINT_TEST_INIT(state);
flint_printf("prime_pi....");
fflush(stdout);
for (n=1; n<10000 * FLINT_MIN(10, flint_test_multiplier()); n++)
{
if ((n_prime_pi(n-1)+1 == n_prime_pi(n)) != n_is_prime(n))
{
flint_printf("FAIL:\n");
flint_printf("expected pi(%d) + 1 = pi(%d)\n", n-1, n);
abort();
}
}
for (n=1; n<5000 * FLINT_MIN(10, flint_test_multiplier()); n++)
{
if (n_prime_pi(n_nth_prime(n)) != n)
{
flint_printf("FAIL:\n");
flint_printf("expected pi(prime(%d)) = %d\n", n, n);
abort();
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}