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

57 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) 2011 Andy Novocin
Copyright (C) 2011 Sebastian Pancratz
******************************************************************************/
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
void fmpz_poly_hensel_lift_tree_recursive(slong *link,
fmpz_poly_t *v, fmpz_poly_t *w, fmpz_poly_t f, slong j, slong inv,
const fmpz_t p0, const fmpz_t p1)
{
if (j >= 0)
{
if (inv == 1)
fmpz_poly_hensel_lift(v[j], v[j + 1], w[j], w[j + 1], f,
v[j], v[j + 1], w[j], w[j + 1],
p0, p1);
else if (inv == -1)
fmpz_poly_hensel_lift_only_inverse(w[j], w[j+1],
v[j], v[j+1], w[j], w[j+1], p0, p1);
else
fmpz_poly_hensel_lift_without_inverse(v[j], v[j+1], f,
v[j], v[j+1], w[j], w[j+1],
p0, p1);
fmpz_poly_hensel_lift_tree_recursive(link, v, w, v[j], link[j],
inv, p0, p1);
fmpz_poly_hensel_lift_tree_recursive(link, v, w, v[j+1], link[j+1],
inv, p0, p1);
}
}