/* mpihelp-mul_1.c  -  MPI helper functions
 * Copyright (C) 1994, 1996, 1997, 1998, 2001 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG 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.
 *
 * GnuPG 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 *
 * Note: This code is heavily based on the GNU MP Library.
 *	 Actually it's the same code with only minor changes in the
 *	 way the data is stored; this is to support the abstraction
 *	 of an optional secure memory allocation which may be used
 *	 to avoid revealing of sensitive data due to paging etc.
 *	 The GNU MP Library itself is published under the LGPL;
 *	 however I decided to publish this code under the plain GPL.
 */

#include "mpi-internal.h"
#include "longlong.h"

mpi_limb_t
mpihelp_mul_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
	      mpi_limb_t s2_limb)
{
	mpi_limb_t cy_limb;
	mpi_size_t j;
	mpi_limb_t prod_high, prod_low;

	/* The loop counter and index J goes from -S1_SIZE to -1.  This way
	 * the loop becomes faster.  */
	j = -s1_size;

	/* Offset the base pointers to compensate for the negative indices.  */
	s1_ptr -= j;
	res_ptr -= j;

	cy_limb = 0;
	do {
		umul_ppmm(prod_high, prod_low, s1_ptr[j], s2_limb);
		prod_low += cy_limb;
		cy_limb = (prod_low < cy_limb ? 1 : 0) + prod_high;
		res_ptr[j] = prod_low;
	} while (++j);

	return cy_limb;
}
t</a><a href='/cgit.cgi/linux/net-next.git/diff/net/mac80211/spectmgmt.c?id=a8c9701427987d959fec3f99bb2811d943686b7b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/mac80211/spectmgmt.c'>
<input type='hidden' name='id' value='a8c9701427987d959fec3f99bb2811d943686b7b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=a8c9701427987d959fec3f99bb2811d943686b7b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=a8c9701427987d959fec3f99bb2811d943686b7b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/mac80211?id=a8c9701427987d959fec3f99bb2811d943686b7b'>mac80211</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/mac80211/spectmgmt.c?id=a8c9701427987d959fec3f99bb2811d943686b7b'>spectmgmt.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/mac80211/spectmgmt.c?id=a8c9701427987d959fec3f99bb2811d943686b7b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>