98 lines
2.7 KiB
C
98 lines
2.7 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 <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_poly.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;
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FLINT_TEST_INIT(state);
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flint_printf("interpolate_fmpz_vec....");
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fflush(stdout);
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for (i = 0; i < 100 * flint_test_multiplier(); i++)
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{
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fmpq_poly_t P;
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fmpz *x, *y, *z;
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fmpq_t q;
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slong j, n, bits;
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n = n_randint(state, 50);
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bits = n_randint(state, 100);
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x = _fmpz_vec_init(n);
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y = _fmpz_vec_init(n);
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z = _fmpz_vec_init(n);
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fmpq_poly_init(P);
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for (j = 0; j < n; j++)
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fmpz_set_si(x + j, -n/2 + j);
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_fmpz_vec_randtest(y, state, n, bits);
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fmpq_poly_interpolate_fmpz_vec(P, x, y, n);
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fmpq_init(q);
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for (j = 0; j < n; j++)
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{
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fmpq_poly_evaluate_fmpz(q, P, x + j);
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fmpz_set(z + j, fmpq_numref(q));
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if (!fmpz_equal(z + j, y + j) || !fmpz_is_one(fmpq_denref(q)))
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{
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flint_printf("FAIL:\n");
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flint_printf("x:\n"); _fmpz_vec_print(x, n); flint_printf("\n\n");
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flint_printf("y:\n"); _fmpz_vec_print(y, n); flint_printf("\n\n");
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flint_printf("P:\n"); fmpq_poly_print(P), flint_printf("\n\n");
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abort();
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}
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}
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fmpq_clear(q);
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fmpq_poly_clear(P);
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_fmpz_vec_clear(x, n);
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_fmpz_vec_clear(y, n);
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_fmpz_vec_clear(z, n);
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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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