pqc/external/flint-2.4.3/ulong_extras/test/t-euler_phi.c
2014-05-24 23:16:06 +02:00

57 lines
1.7 KiB
C

/*=============================================================================
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, k, t;
FLINT_TEST_INIT(state);
flint_printf("euler_phi....");
fflush(stdout);
for (n = 0; n < 20 * flint_test_multiplier(); n++)
{
t = 0;
for (k = 1; k <= n; k++)
t += (n_gcd(n, k) == 1);
if (t != n_euler_phi(n))
{
flint_printf("FAIL:\n");
flint_printf("phi(%d) = %d, got %wu\n", n, t, n_euler_phi(n));
abort();
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}