/* mpi-cmp.c  -  MPI functions * Copyright (C) 1998, 1999 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 */ #include "mpi-internal.h" int mpi_cmp_ui(MPI u, unsigned long v){	mpi_limb_t limb = v; 	mpi_normalize(u);	if (!u->nlimbs && !limb)		return 0;	if (u->sign)		return -1;	if (u->nlimbs > 1)		return 1; 	if (u->d[0] == limb)		return 0;	else if (u->d[0] > limb)		return 1;	else		return -1;}EXPORT_SYMBOL_GPL(mpi_cmp_ui); static int do_mpi_cmp(MPI u, MPI v, int absmode){	mpi_size_t usize;	mpi_size_t vsize;	int usign;	int vsign;	int cmp; 	mpi_normalize(u);	mpi_normalize(v); 	usize = u->nlimbs;	vsize = v->nlimbs;	usign = absmode ? 0 : u->sign;	vsign = absmode ? 0 : v->sign; 	/* Compare sign bits.  */ 	if (!usign && vsign)		return 1;	if (usign && !vsign)		return -1; 	/* U and V are either both positive or both negative.  */ 	if (usize != vsize && !usign && !vsign)		return usize - vsize;	if (usize != vsize && usign && vsign)		return vsize + usize;	if (!usize)		return 0;	cmp = mpihelp_cmp(u->d, v->d, usize);	if (!cmp)		return 0;	if ((cmp < 0?1:0) == (usign?1:0))		return 1; 	return -1;} int mpi_cmp(MPI u, MPI v){	return do_mpi_cmp(u, v, 0);}EXPORT_SYMBOL_GPL(mpi_cmp); int mpi_cmpabs(MPI u, MPI v){	return do_mpi_cmp(u, v, 1);}EXPORT_SYMBOL_GPL(mpi_cmpabs);