mpi-genesis 1
mpi_second_cut 2 * Modified by No Such Labs. (C) 2015. See README.
mpi-genesis 3 *
mpi_second_cut 4 * This file was originally part of Gnu Privacy Guard (GPG), ver. 1.4.10,
mpi_second_cut 5 * SHA256(gnupg-1.4.10.tar.gz):
mpi_second_cut 6 * 0bfd74660a2f6cedcf7d8256db4a63c996ffebbcdc2cf54397bfb72878c5a85a
mpi_second_cut 7 * (C) 1994-2005 Free Software Foundation, Inc.
mpi-genesis 8 *
mpi_second_cut 9 * This program is free software: you can redistribute it and/or modify
mpi-genesis 10 * it under the terms of the GNU General Public License as published by
mpi_second_cut 11 * the Free Software Foundation, either version 3 of the License, or
mpi-genesis 12 * (at your option) any later version.
mpi-genesis 13 *
mpi_second_cut 14 * This program is distributed in the hope that it will be useful,
mpi-genesis 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
mpi-genesis 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
mpi-genesis 17 * GNU General Public License for more details.
mpi-genesis 18 *
mpi-genesis 19 * You should have received a copy of the GNU General Public License
mpi_second_cut 20 * along with this program. If not, see <http:
mpi-genesis 21 */
mpi-genesis 22
mpi-genesis 23 #include <stdio.h>
mpi-genesis 24 #include <stdlib.h>
mpi-genesis 25
mpi_second_cut 26 #include "knobs.h"
mpi-genesis 27 #include "mpi-internal.h"
mpi-genesis 28
mpi-genesis 29
mpi-genesis 30 * Compare OP1_PTR/OP1_SIZE with OP2_PTR/OP2_SIZE.
mpi-genesis 31 * There are no restrictions on the relative sizes of
mpi-genesis 32 * the two arguments.
mpi-genesis 33 * Return 1 if OP1 > OP2, 0 if they are equal, and -1 if OP1 < OP2.
mpi-genesis 34 */
mpi-genesis 35 int
mpi-genesis 36 mpihelp_cmp( mpi_ptr_t op1_ptr, mpi_ptr_t op2_ptr, mpi_size_t size )
mpi-genesis 37 {
mpi-genesis 38 mpi_size_t i;
mpi-genesis 39 mpi_limb_t op1_word, op2_word;
mpi-genesis 40
mpi-genesis 41 for( i = size - 1; i >= 0 ; i--) {
mpi-genesis 42 op1_word = op1_ptr[i];
mpi-genesis 43 op2_word = op2_ptr[i];
mpi-genesis 44 if( op1_word != op2_word )
mpi-genesis 45 goto diff;
mpi-genesis 46 }
mpi-genesis 47 return 0;
mpi-genesis 48
mpi-genesis 49 diff:
mpi-genesis 50
mpi-genesis 51 * op2_word - op2_word
mpi-genesis 52 * since that expression might give signed overflow. */
mpi-genesis 53 return (op1_word > op2_word) ? 1 : -1;
mpi-genesis 54 }
mpi-genesis 55