74 lines
2.1 KiB
C
74 lines
2.1 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 Sebastian Pancratz
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Copyright (C) 2011 Fredrik Johansson
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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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#include "fmpq.h"
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void
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_fmpq_poly_evaluate_fmpq(fmpz_t rnum, fmpz_t rden,
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const fmpz * poly, const fmpz_t den, slong len,
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const fmpz_t anum, const fmpz_t aden)
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{
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fmpz_t d;
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_fmpz_poly_evaluate_horner_mpq(rnum, rden, poly, len, anum, aden);
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fmpz_mul(rden, rden, den);
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fmpz_init(d);
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fmpz_gcd(d, rnum, rden);
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if (*d != WORD(1))
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{
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fmpz_divexact(rnum, rnum, d);
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fmpz_divexact(rden, rden, d);
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}
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fmpz_clear(d);
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}
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void
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fmpq_poly_evaluate_fmpq(fmpq_t res, const fmpq_poly_t poly, const fmpq_t a)
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{
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if (res != a)
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{
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_fmpq_poly_evaluate_fmpq(fmpq_numref(res), fmpq_denref(res),
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poly->coeffs, poly->den, poly->length,
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fmpq_numref(a), fmpq_denref(a));
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}
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else
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{
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fmpq_t t;
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fmpq_init(t);
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fmpq_set(t, a);
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fmpq_poly_evaluate_fmpq(res, poly, t);
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fmpq_clear(t);
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}
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}
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