103 lines
2.7 KiB
C
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;
|
|
}
|