pqc/external/flint-2.4.3/fmpz_poly/content.c

48 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 Sebastian Pancratz
******************************************************************************/
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
void
_fmpz_poly_content(fmpz_t res, const fmpz * poly, slong len)
{
fmpz_zero(res);
while (len--)
fmpz_gcd(res, res, poly + len);
}
void
fmpz_poly_content(fmpz_t res, const fmpz_poly_t poly)
{
fmpz_t t;
fmpz_init(t);
_fmpz_poly_content(t, poly->coeffs, poly->length);
fmpz_swap(res, t);
fmpz_clear(t);
}