pqc/external/flint-2.4.3/fmpq_poly/get_coeff_mpq.c
2014-05-24 23:16:06 +02:00

46 lines
1.5 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 William Hart
Copyright (C) 2010 Sebastian Pancratz
******************************************************************************/
#include <gmp.h>
#include <stdlib.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpq_poly.h"
void fmpq_poly_get_coeff_mpq(mpq_t x, const fmpq_poly_t poly, slong n)
{
if (n >= poly->length) /* Coefficient is beyond the end of poly */
{
flint_mpq_set_si(x, 0, 1);
return;
}
fmpz_get_mpz(mpq_numref(x), poly->coeffs + n);
fmpz_get_mpz(mpq_denref(x), poly->den);
mpq_canonicalize(x);
}