111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*=============================================================================
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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) 2010 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 <gmp.h>
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#include "flint.h"
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#include "fmpz.h"
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#include "fmpz_vec.h"
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#include "fmpz_mat.h"
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#include "ulong_extras.h"
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int
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main(void)
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{
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fmpz_mat_t A;
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slong i, m;
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fmpz_t det, result;
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FLINT_TEST_INIT(state);
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flint_printf("det....");
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fflush(stdout);
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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m = n_randint(state, 10);
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fmpz_mat_init(A, m, m);
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fmpz_init(det);
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fmpz_init(result);
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if (m)
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fmpz_randtest(det, state, 30);
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else
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fmpz_set_ui(det, UWORD(1));
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fmpz_mat_randdet(A, state, det);
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fmpz_mat_randops(A, state, n_randint(state, 2*m*m + 1));
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fmpz_mat_det(result, A);
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if (!fmpz_equal(det, result))
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{
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flint_printf("FAIL:\n");
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flint_printf("wrong determinant!\n");
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fmpz_mat_print_pretty(A), flint_printf("\n");
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flint_printf("expected: "), fmpz_print(det), flint_printf("\n");
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flint_printf("ncomputed: "), fmpz_print(result), flint_printf("\n");
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abort();
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}
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fmpz_mat_clear(A);
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fmpz_clear(det);
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fmpz_clear(result);
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}
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/* Generate nontrivial singular matrices */
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for (i = 0; i < 10000; i++)
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{
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m = 2 + n_randint(state, 10);
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fmpz_mat_init(A, m, m);
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fmpz_init(det);
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fmpz_mat_randrank(A, state, 1+n_randint(state, m - 1), 1+n_randint(state, 10));
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fmpz_mat_randops(A, state, n_randint(state, 2*m*m + 1));
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fmpz_mat_det(det, A);
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if (*det)
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{
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flint_printf("FAIL:\n");
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flint_printf("expected zero determinant!\n");
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fmpz_mat_print_pretty(A), flint_printf("\n");
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abort();
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}
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fmpz_mat_clear(A);
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fmpz_clear(det);
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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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