140 lines
4.1 KiB
C
140 lines
4.1 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) 2009 William Hart
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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_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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FLINT_TEST_INIT(state);
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flint_printf("pseudo_rem_cohen....");
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fflush(stdout);
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/* Compare with q*b + r = a, no aliasing */
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for (i = 0; i < 200 * flint_test_multiplier(); i++)
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{
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fmpz_poly_t a, b, q, r1, r2;
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fmpz_poly_init(a);
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fmpz_poly_init(b);
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fmpz_poly_init(q);
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fmpz_poly_init(r1);
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fmpz_poly_init(r2);
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fmpz_poly_randtest(a, state, n_randint(state, 100), 200);
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fmpz_poly_randtest_not_zero(b, state, n_randint(state, 100) + 1, 200);
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fmpz_poly_pseudo_divrem_cohen(q, r1, a, b);
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fmpz_poly_pseudo_rem_cohen(r2, a, b);
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result = (fmpz_poly_equal(r1, r2));
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if (!result)
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{
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flint_printf("FAIL (correctness):\n");
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flint_printf("a = "), fmpz_poly_print(a), flint_printf("\n\n");
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flint_printf("b = "), fmpz_poly_print(b), flint_printf("\n\n");
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flint_printf("r1 = "), fmpz_poly_print(r1), flint_printf("\n\n");
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flint_printf("r2 = "), fmpz_poly_print(r2), flint_printf("\n\n");
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abort();
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}
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fmpz_poly_clear(a);
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fmpz_poly_clear(b);
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fmpz_poly_clear(q);
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fmpz_poly_clear(r1);
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fmpz_poly_clear(r2);
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}
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/* Check r and a alias */
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for (i = 0; i < 50 * flint_test_multiplier(); i++)
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{
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fmpz_poly_t a, b, r;
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fmpz_poly_init(a);
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fmpz_poly_init(b);
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fmpz_poly_init(r);
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fmpz_poly_randtest(a, state, n_randint(state, 100), 200);
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fmpz_poly_randtest_not_zero(b, state, n_randint(state, 100) + 1, 200);
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fmpz_poly_pseudo_rem_cohen(r, a, b);
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fmpz_poly_pseudo_rem_cohen(a, a, b);
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result = (fmpz_poly_equal(a, r));
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if (!result)
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{
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flint_printf("FAIL (aliasing r, a):\n");
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fmpz_poly_print(a), flint_printf("\n\n");
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fmpz_poly_print(r), flint_printf("\n\n");
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abort();
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}
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fmpz_poly_clear(a);
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fmpz_poly_clear(b);
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fmpz_poly_clear(r);
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}
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/* Check r and b alias */
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for (i = 0; i < 50 * flint_test_multiplier(); i++)
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{
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fmpz_poly_t a, b, r;
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fmpz_poly_init(a);
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fmpz_poly_init(b);
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fmpz_poly_init(r);
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fmpz_poly_randtest(a, state, n_randint(state, 100), 200);
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fmpz_poly_randtest_not_zero(b, state, n_randint(state, 100) + 1, 200);
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fmpz_poly_pseudo_rem_cohen(r, a, b);
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fmpz_poly_pseudo_rem_cohen(b, a, b);
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result = (fmpz_poly_equal(b, r));
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if (!result)
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{
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flint_printf("FAIL (aliasing r, b):\n");
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fmpz_poly_print(b), flint_printf("\n\n");
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fmpz_poly_print(r), flint_printf("\n\n");
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abort();
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}
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fmpz_poly_clear(a);
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fmpz_poly_clear(b);
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fmpz_poly_clear(r);
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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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