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

46 lines
1.6 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) 2008, 2009 William Hart
******************************************************************************/
#include <gmp.h>
#include <stdlib.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
void
fmpz_poly_set_coeff_fmpz(fmpz_poly_t poly, slong n, const fmpz_t x)
{
fmpz_poly_fit_length(poly, n + 1);
if (n + 1 > poly->length) /* insert zeroes between end of poly and new coeff if needed */
{
flint_mpn_zero((mp_ptr) (poly->coeffs + poly->length), n - poly->length);
poly->length = n + 1;
}
fmpz_set(poly->coeffs + n, x);
_fmpz_poly_normalise(poly); /* we may have set leading coefficient to zero */
}