74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*=============================================================================
|
|
|
|
This file is part of FLINT.
|
|
|
|
FLINT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
FLINT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with FLINT; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2010 Sebastian Pancratz
|
|
Copyright (C) 2011 Fredrik Johansson
|
|
|
|
******************************************************************************/
|
|
|
|
#include <gmp.h>
|
|
#include "flint.h"
|
|
#include "fmpz.h"
|
|
#include "fmpz_poly.h"
|
|
#include "fmpq_poly.h"
|
|
#include "fmpq.h"
|
|
|
|
void
|
|
_fmpq_poly_evaluate_fmpq(fmpz_t rnum, fmpz_t rden,
|
|
const fmpz * poly, const fmpz_t den, slong len,
|
|
const fmpz_t anum, const fmpz_t aden)
|
|
{
|
|
fmpz_t d;
|
|
|
|
_fmpz_poly_evaluate_horner_mpq(rnum, rden, poly, len, anum, aden);
|
|
fmpz_mul(rden, rden, den);
|
|
|
|
fmpz_init(d);
|
|
fmpz_gcd(d, rnum, rden);
|
|
if (*d != WORD(1))
|
|
{
|
|
fmpz_divexact(rnum, rnum, d);
|
|
fmpz_divexact(rden, rden, d);
|
|
}
|
|
fmpz_clear(d);
|
|
}
|
|
|
|
void
|
|
fmpq_poly_evaluate_fmpq(fmpq_t res, const fmpq_poly_t poly, const fmpq_t a)
|
|
{
|
|
if (res != a)
|
|
{
|
|
_fmpq_poly_evaluate_fmpq(fmpq_numref(res), fmpq_denref(res),
|
|
poly->coeffs, poly->den, poly->length,
|
|
fmpq_numref(a), fmpq_denref(a));
|
|
}
|
|
else
|
|
{
|
|
fmpq_t t;
|
|
|
|
fmpq_init(t);
|
|
fmpq_set(t, a);
|
|
fmpq_poly_evaluate_fmpq(res, poly, t);
|
|
fmpq_clear(t);
|
|
}
|
|
}
|
|
|