2008-06-25 03:33:36 -04:00
|
|
|
/* mpn_mullow_basecase -- Internal routine to multiply two natural
|
|
|
|
|
numbers of length m and n and return the low part.
|
|
|
|
|
|
|
|
|
|
THIS IS AN INTERNAL FUNCTION WITH A MUTABLE INTERFACE. IT IS ONLY
|
|
|
|
|
SAFE TO REACH THIS FUNCTION THROUGH DOCUMENTED INTERFACES.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc.
|
|
|
|
|
|
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
|
|
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
|
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
|
|
|
the Free Software Foundation; either version 2.1 of the License, or (at your
|
|
|
|
|
option) any later version.
|
|
|
|
|
|
|
|
|
|
The GNU MP Library 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 Lesser General Public
|
|
|
|
|
License for more details.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
|
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
|
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
|
|
|
MA 02110-1301, USA. */
|
|
|
|
|
|
|
|
|
|
#include "gmp.h"
|
|
|
|
|
#include "gmp-impl.h"
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
FIXME: Should use mpn_addmul_2 (and higher).
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
mpn_mullow_basecase (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
|
|
|
|
|
{
|
|
|
|
|
mp_size_t i;
|
|
|
|
|
|
|
|
|
|
mpn_mul_1 (rp, up, n, vp[0]);
|
|
|
|
|
|
|
|
|
|
for (i = 1; i < n; i++)
|
|
|
|
|
mpn_addmul_1 (rp + i, up, n - i, vp[i]);
|
|
|
|
|
}
|
