pqc/external/flint-2.4.3/ulong_extras/mulmod2_preinv.c
2014-05-24 23:16:06 +02:00

39 lines
1.3 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) 2009 William Hart
******************************************************************************/
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
mp_limb_t
n_mulmod2_preinv(mp_limb_t a, mp_limb_t b, mp_limb_t n, mp_limb_t ninv)
{
mp_limb_t p1, p2;
umul_ppmm(p1, p2, a, b);
return n_ll_mod_preinv(p1, p2, n, ninv);
}