158 lines
4.6 KiB
C
158 lines
4.6 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) 2011 Sebastian Pancratz
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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 "fmpq_poly.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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int i, result;
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ulong cflags = UWORD(0);
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FLINT_TEST_INIT(state);
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flint_printf("get_slice....");
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fflush(stdout);
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/* Check aliasing of a and b */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t a, b, c;
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slong j1, j2;
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fmpq_poly_init(a);
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fmpq_poly_init(b);
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fmpq_poly_init(c);
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fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
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fmpq_poly_set(b, a);
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j1 = n_randint(state, 100);
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j2 = n_randint(state, 100);
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fmpq_poly_get_slice(c, b, j1, j2);
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fmpq_poly_get_slice(b, b, j1, j2);
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cflags |= fmpq_poly_is_canonical(b) ? 0 : 1;
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cflags |= fmpq_poly_is_canonical(c) ? 0 : 2;
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result = (fmpq_poly_equal(b, c) && !cflags);
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if (!result)
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{
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flint_printf("FAIL:\n");
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fmpq_poly_debug(a), flint_printf("\n\n");
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fmpq_poly_debug(b), flint_printf("\n\n");
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fmpq_poly_debug(c), flint_printf("\n\n");
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flint_printf("cflags = %wu\n\n", cflags);
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abort();
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}
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fmpq_poly_clear(a);
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fmpq_poly_clear(b);
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fmpq_poly_clear(c);
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}
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/* Check slice with i >= j is zero */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t a, b;
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slong j1, j2;
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fmpq_poly_init(a);
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fmpq_poly_init(b);
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fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
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j2 = n_randint(state, 60);
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j1 = j2 + n_randint(state, 60);
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fmpq_poly_get_slice(b, a, j1, j2);
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cflags |= fmpq_poly_is_canonical(b) ? 0 : 1;
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result = (fmpq_poly_is_zero(b) && !cflags);
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if (!result)
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{
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flint_printf("FAIL:\n");
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fmpq_poly_debug(a), flint_printf("\n\n");
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fmpq_poly_debug(b), flint_printf("\n\n");
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flint_printf("cflags = %wu\n\n", cflags);
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abort();
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}
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fmpq_poly_clear(a);
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fmpq_poly_clear(b);
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}
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/* Check transitivity when j1 <= k1 <= k2 <= j2 */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t a, b, c, d;
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slong j1, j2, k1, k2;
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fmpq_poly_init(a);
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fmpq_poly_init(b);
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fmpq_poly_init(c);
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fmpq_poly_init(d);
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fmpq_poly_randtest(a, state, n_randint(state, 100), 200);
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j1 = n_randint(state, 20);
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k1 = j1 + n_randint(state, 20);
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k2 = k1 + n_randint(state, 20);
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j2 = k2 + n_randint(state, 20);
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fmpq_poly_get_slice(b, a, j1, j2);
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fmpq_poly_get_slice(c, b, k1, k2);
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fmpq_poly_get_slice(d, a, k1, k2);
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cflags |= fmpq_poly_is_canonical(b) ? 0 : 1;
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cflags |= fmpq_poly_is_canonical(c) ? 0 : 2;
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cflags |= fmpq_poly_is_canonical(d) ? 0 : 4;
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result = (fmpq_poly_equal(c, d) && !cflags);
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if (!result)
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{
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flint_printf("FAIL:\n");
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fmpq_poly_debug(a), flint_printf("\n\n");
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fmpq_poly_debug(b), flint_printf("\n\n");
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fmpq_poly_debug(c), flint_printf("\n\n");
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fmpq_poly_debug(d), flint_printf("\n\n");
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flint_printf("cflags = %wu\n\n", cflags);
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abort();
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}
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fmpq_poly_clear(a);
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fmpq_poly_clear(b);
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fmpq_poly_clear(c);
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fmpq_poly_clear(d);
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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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