125 lines
3.6 KiB
C
125 lines
3.6 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) 2009 William Hart
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Copyright (C) 2010 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("primitive_part....");
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fflush(stdout);
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/* Check aliasing */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t f, g;
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fmpq_t x;
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fmpq_init(x);
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fmpq_poly_init(f);
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fmpq_poly_init(g);
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fmpq_poly_randtest(f, state, n_randint(state, 100), 200);
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fmpq_randtest(x, state, 100);
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fmpq_poly_scalar_mul_fmpq(f, f, x);
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fmpq_poly_primitive_part(g, f);
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fmpq_poly_primitive_part(f, f);
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cflags |= fmpq_poly_is_canonical(f) ? 0 : 1;
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cflags |= fmpq_poly_is_canonical(g) ? 0 : 2;
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result = (fmpq_poly_equal(f, g) && !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(f), flint_printf("\n\n");
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fmpq_poly_debug(g), 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_clear(x);
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fmpq_poly_clear(f);
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fmpq_poly_clear(g);
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}
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/* Check that content(f) primitive_part(f) = +- f */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t f, g;
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fmpq_t x, y;
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fmpq_init(x);
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fmpq_init(y);
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fmpq_poly_init(f);
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fmpq_poly_init(g);
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fmpq_poly_randtest(f, state, n_randint(state, 100), 200);
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fmpq_randtest(x, state, 100);
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fmpq_poly_scalar_mul_fmpq(f, f, x);
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fmpq_poly_content(y, f);
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fmpq_poly_primitive_part(g, f);
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fmpq_poly_scalar_mul_fmpq(g, g, y);
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if (!fmpq_poly_is_zero(f) && fmpz_sgn(f->coeffs + (f->length - 1)) < 0)
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fmpq_poly_neg(g, g);
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cflags |= fmpq_poly_is_canonical(f) ? 0 : 1;
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cflags |= fmpq_poly_is_canonical(g) ? 0 : 2;
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result = (fmpq_poly_equal(f, g) && !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(f), flint_printf("\n\n");
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fmpq_poly_debug(g), 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_clear(x);
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fmpq_clear(y);
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fmpq_poly_clear(f);
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fmpq_poly_clear(g);
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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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