gecko/security/nss/lib/freebl/mpi/tests/mptest-5.c
2008-06-06 08:40:11 -04:00

104 lines
3.2 KiB
C

/*
* Simple test driver for MPI library
*
* Test 5: Other number theoretic functions
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
*
* The Initial Developer of the Original Code is
* Michael J. Fromberger.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* $Id: mptest-5.c,v 1.4 2004/04/27 23:04:37 gerv%gerv.net Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include "mpi.h"
int main(int argc, char *argv[])
{
mp_int a, b, c, x, y;
if(argc < 3) {
fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
return 1;
}
printf("Test 5: Number theoretic functions\n\n");
mp_init(&a);
mp_init(&b);
mp_read_radix(&a, argv[1], 10);
mp_read_radix(&b, argv[2], 10);
printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
mp_init(&c);
printf("\nc = (a, b)\n");
mp_gcd(&a, &b, &c);
printf("Euclid: c = "); mp_print(&c, stdout); fputc('\n', stdout);
/*
mp_bgcd(&a, &b, &c);
printf("Binary: c = "); mp_print(&c, stdout); fputc('\n', stdout);
*/
mp_init(&x);
mp_init(&y);
printf("\nc = (a, b) = ax + by\n");
mp_xgcd(&a, &b, &c, &x, &y);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("x = "); mp_print(&x, stdout); fputc('\n', stdout);
printf("y = "); mp_print(&y, stdout); fputc('\n', stdout);
printf("\nc = a^-1 (mod b)\n");
if(mp_invmod(&a, &b, &c) == MP_UNDEF) {
printf("a has no inverse mod b\n");
} else {
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
}
mp_clear(&y);
mp_clear(&x);
mp_clear(&c);
mp_clear(&b);
mp_clear(&a);
return 0;
}