63 lines
2.2 KiB
C
63 lines
2.2 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 "flint.h"
|
|
#include "fmpz.h"
|
|
#include "fmpz_poly.h"
|
|
|
|
void
|
|
_fmpz_poly_add(fmpz * res, const fmpz * poly1, slong len1, const fmpz * poly2,
|
|
slong len2)
|
|
{
|
|
slong i, min = FLINT_MIN(len1, len2);
|
|
|
|
for (i = 0; i < min; i++) /* add up to the length of the shorter poly */
|
|
fmpz_add(res + i, poly1 + i, poly2 + i);
|
|
|
|
if (poly1 != res) /* copy any remaining coefficients from poly1 */
|
|
for (i = min; i < len1; i++)
|
|
fmpz_set(res + i, poly1 + i);
|
|
|
|
if (poly2 != res) /* copy any remaining coefficients from poly2 */
|
|
for (i = min; i < len2; i++)
|
|
fmpz_set(res + i, poly2 + i);
|
|
}
|
|
|
|
void
|
|
fmpz_poly_add(fmpz_poly_t res, const fmpz_poly_t poly1,
|
|
const fmpz_poly_t poly2)
|
|
{
|
|
slong max = FLINT_MAX(poly1->length, poly2->length);
|
|
|
|
fmpz_poly_fit_length(res, max);
|
|
|
|
_fmpz_poly_add(res->coeffs, poly1->coeffs, poly1->length, poly2->coeffs,
|
|
poly2->length);
|
|
|
|
_fmpz_poly_set_length(res, max);
|
|
_fmpz_poly_normalise(res); /* there may have been cancellation */
|
|
}
|