112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2011 Fredrik Johansson
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "flint.h"
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#include "perm.h"
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#include "ulong_extras.h"
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int main(void)
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{
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int i;
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FLINT_TEST_INIT(state);
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flint_printf("compose....");
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fflush(stdout);
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/* check (b^(-1))(b(a)) = a */
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for (i = 0; i < 10000; i++)
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{
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slong n, *a, *b, *binv, *c;
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n = n_randint(state, 100);
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a = _perm_init(n);
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b = _perm_init(n);
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binv = _perm_init(n);
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c = _perm_init(n);
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_perm_randtest(a, n, state);
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_perm_randtest(b, n, state);
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_perm_inv(binv, b, n);
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_perm_compose(c, b, a, n);
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_perm_compose(c, binv, c, n);
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if (!_perm_equal(a, c, n))
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{
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flint_printf("FAIL:\n");
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flint_printf("a: "); _perm_print(a, n); flint_printf("\n\n");
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flint_printf("b: "); _perm_print(b, n); flint_printf("\n\n");
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flint_printf("binv: "); _perm_print(binv, n); flint_printf("\n\n");
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flint_printf("c: "); _perm_print(c, n); flint_printf("\n\n");
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abort();
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}
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_perm_clear(a);
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_perm_clear(b);
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_perm_clear(binv);
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_perm_clear(c);
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}
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/* check aliasing with first argument */
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for (i = 0; i < 10000; i++)
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{
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slong n, *a, *b, *c;
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n = n_randint(state, 100);
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a = _perm_init(n);
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b = _perm_init(n);
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c = _perm_init(n);
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_perm_randtest(a, n, state);
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_perm_randtest(b, n, state);
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_perm_compose(c, b, a, n);
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_perm_compose(b, b, a, n);
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if (!_perm_equal(b, c, n))
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{
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flint_printf("FAIL:\n");
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flint_printf("a: "); _perm_print(a, n); flint_printf("\n\n");
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flint_printf("b: "); _perm_print(b, n); flint_printf("\n\n");
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flint_printf("c: "); _perm_print(c, n); flint_printf("\n\n");
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abort();
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}
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_perm_clear(a);
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_perm_clear(b);
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_perm_clear(c);
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}
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FLINT_TEST_CLEANUP(state);
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flint_printf("PASS\n");
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return 0;
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}
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