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smg_comms/mpi/mpi-cmp.c
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 3948 /* mpi-cmp.c  -  MPI functions
 3949  * Modified by No Such Labs. (C) 2015. See README.
 3950  *
 3951  * This file was originally part of Gnu Privacy Guard (GPG), ver. 1.4.10,
 3952  * SHA256(gnupg-1.4.10.tar.gz):
 3953  *        0bfd74660a2f6cedcf7d8256db4a63c996ffebbcdc2cf54397bfb72878c5a85a
 3954  * (C) 1994-2005 Free Software Foundation, Inc.
 3955  *
 3956  * This program is free software: you can redistribute it and/or modify
 3957  * it under the terms of the GNU General Public License as published by
 3958  * the Free Software Foundation, either version 3 of the License, or
 3959  * (at your option) any later version.
 3960  *
 3961  * This program is distributed in the hope that it will be useful,
 3962  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 3963  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 3964  * GNU General Public License for more details.
 3965  *
 3966  * You should have received a copy of the GNU General Public License
 3967  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 3968  */
 3969 
 3970 #include <stdio.h>
 3971 #include <stdlib.h>
 3972 
 3973 #include "knobs.h"
 3974 #include "mpi-internal.h"
 3975 
 3976 int
 3977 mpi_cmp_ui( MPI u, unsigned long v )
 3978 {
 3979     mpi_limb_t limb = v;
 3980 
 3981     mpi_normalize( u );
 3982     if( !u->nlimbs && !limb )
 3983 	return 0;
 3984     if( u->sign )
 3985 	return -1;
 3986     if( u->nlimbs > 1 )
 3987 	return 1;
 3988 
 3989     if( u->d[0] == limb )
 3990 	return 0;
 3991     else if( u->d[0] > limb )
 3992 	return 1;
 3993     else
 3994 	return -1;
 3995 }
 3996 
 3997 int
 3998 mpi_cmp( MPI u, MPI v )
 3999 {
 4000     mpi_size_t usize, vsize;
 4001     int cmp;
 4002 
 4003     mpi_normalize( u );
 4004     mpi_normalize( v );
 4005     usize = u->nlimbs;
 4006     vsize = v->nlimbs;
 4007     if( !u->sign && v->sign )
 4008 	return 1;
 4009     if( u->sign && !v->sign )
 4010 	return -1;
 4011     if( usize != vsize && !u->sign && !v->sign )
 4012 	return usize - vsize;
 4013     if( usize != vsize && u->sign && v->sign )
 4014 	return vsize + usize;
 4015     if( !usize )
 4016 	return 0;
 4017     if( !(cmp=mpihelp_cmp( u->d, v->d, usize )) )
 4018 	return 0;
 4019     if( (cmp < 0?1:0) == (u->sign?1:0))
 4020 	return 1;
 4021     return -1;
 4022 }
 4023 
 4024