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

103 lines
2.7 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) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "flint.h"
#include "perm.h"
#include "ulong_extras.h"
int main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("inv....");
fflush(stdout);
/* check inv(inv(a)) == a */
for (i = 0; i < 10000; i++)
{
slong n, *a, *b, *c;
n = n_randint(state, 100);
a = _perm_init(n);
b = _perm_init(n);
c = _perm_init(n);
_perm_randtest(a, n, state);
_perm_inv(b, a, n);
_perm_inv(c, b, n);
if (!_perm_equal(a, c, n))
{
flint_printf("FAIL:\n");
flint_printf("a: "); _perm_print(a, n); flint_printf("\n\n");
flint_printf("b: "); _perm_print(b, n); flint_printf("\n\n");
flint_printf("c: "); _perm_print(c, n); flint_printf("\n\n");
abort();
}
_perm_clear(a);
_perm_clear(b);
_perm_clear(c);
}
/* check aliasing */
for (i = 0; i < 10000; i++)
{
slong n, *a, *b;
n = n_randint(state, 100);
a = _perm_init(n);
b = _perm_init(n);
_perm_randtest(a, n, state);
_perm_inv(b, a, n);
_perm_inv(a, a, n);
if (!_perm_equal(a, b, n))
{
flint_printf("FAIL:\n");
flint_printf("a: "); _perm_print(a, n); flint_printf("\n\n");
flint_printf("b: "); _perm_print(b, n); flint_printf("\n\n");
abort();
}
_perm_clear(a);
_perm_clear(b);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}