73 lines
2.0 KiB
C
73 lines
2.0 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) 2010, 2011 Sebastian Pancratz
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******************************************************************************/
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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 "fmpq_poly.h"
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void
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_fmpq_poly_set_array_mpq(fmpz * poly, fmpz_t den, const mpq_t * a, slong n)
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{
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slong i;
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mpz_t d, t;
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flint_mpz_init_set_ui(d, 1);
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mpz_init(t);
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for (i = 0; i < n; i++)
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{
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mpz_lcm(d, d, mpq_denref(a[i]));
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}
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for (i = 0; i < n; i++)
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{
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__mpz_struct *ptr = _fmpz_promote(poly + i);
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mpz_divexact(t, d, mpq_denref(a[i]));
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mpz_mul(ptr, mpq_numref(a[i]), t);
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_fmpz_demote_val(poly + i);
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}
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fmpz_set_mpz(den, d);
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mpz_clear(d);
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mpz_clear(t);
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}
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void fmpq_poly_set_array_mpq(fmpq_poly_t poly, const mpq_t * a, slong n)
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{
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if (n == 0)
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{
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fmpq_poly_zero(poly);
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}
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else
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{
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fmpq_poly_fit_length(poly, n);
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_fmpq_poly_set_array_mpq(poly->coeffs, poly->den, a, n);
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_fmpq_poly_set_length(poly, n);
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_fmpq_poly_normalise(poly);
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}
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}
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