/security/nss/lib/freebl/mpi/tests/mptest-3.c

  1/*
  2 * Simple test driver for MPI library
  3 *
  4 * Test 3: Multiplication, division, and exponentiation test
  5 *
  6 * ***** BEGIN LICENSE BLOCK *****
  7 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  8 *
  9 * The contents of this file are subject to the Mozilla Public License Version
 10 * 1.1 (the "License"); you may not use this file except in compliance with
 11 * the License. You may obtain a copy of the License at
 12 * http://www.mozilla.org/MPL/
 13 *
 14 * Software distributed under the License is distributed on an "AS IS" basis,
 15 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 16 * for the specific language governing rights and limitations under the
 17 * License.
 18 *
 19 * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
 20 *
 21 * The Initial Developer of the Original Code is
 22 * Michael J. Fromberger.
 23 * Portions created by the Initial Developer are Copyright (C) 1998
 24 * the Initial Developer. All Rights Reserved.
 25 *
 26 * Contributor(s):
 27 *
 28 * Alternatively, the contents of this file may be used under the terms of
 29 * either the GNU General Public License Version 2 or later (the "GPL"), or
 30 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 31 * in which case the provisions of the GPL or the LGPL are applicable instead
 32 * of those above. If you wish to allow use of your version of this file only
 33 * under the terms of either the GPL or the LGPL, and not to allow others to
 34 * use your version of this file under the terms of the MPL, indicate your
 35 * decision by deleting the provisions above and replace them with the notice
 36 * and other provisions required by the GPL or the LGPL. If you do not delete
 37 * the provisions above, a recipient may use your version of this file under
 38 * the terms of any one of the MPL, the GPL or the LGPL.
 39 *
 40 * ***** END LICENSE BLOCK ***** */
 41/* $Id: mptest-3.c,v 1.4 2004/04/27 23:04:37 gerv%gerv.net Exp $ */
 42
 43#include <stdio.h>
 44#include <stdlib.h>
 45#include <string.h>
 46#include <ctype.h>
 47#include <limits.h>
 48
 49#include <time.h>
 50
 51#include "mpi.h"
 52
 53#define  SQRT 1  /* define nonzero to get square-root test  */
 54#define  EXPT 0  /* define nonzero to get exponentiate test */
 55
 56int main(int argc, char *argv[])
 57{
 58  int      ix;
 59  mp_int   a, b, c, d;
 60  mp_digit r;
 61  mp_err   res;
 62
 63  if(argc < 3) {
 64    fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
 65    return 1;
 66  }
 67
 68  printf("Test 3: Multiplication and division\n\n");
 69  srand(time(NULL));
 70
 71  mp_init(&a);
 72  mp_init(&b);
 73
 74  mp_read_variable_radix(&a, argv[1], 10);
 75  mp_read_variable_radix(&b, argv[2], 10);
 76  printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
 77  printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
 78  
 79  mp_init(&c);
 80  printf("\nc = a * b\n");
 81
 82  mp_mul(&a, &b, &c);
 83  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
 84
 85  printf("\nc = b * 32523\n");
 86
 87  mp_mul_d(&b, 32523, &c);
 88  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
 89  
 90  mp_init(&d);
 91  printf("\nc = a / b, d = a mod b\n");
 92  
 93  mp_div(&a, &b, &c, &d);
 94  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
 95  printf("d = "); mp_print(&d, stdout); fputc('\n', stdout);  
 96
 97  ix = rand() % 256;
 98  printf("\nc = a / %d, r = a mod %d\n", ix, ix);
 99  mp_div_d(&a, (mp_digit)ix, &c, &r);
100  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
101  printf("r = %04X\n", r);
102
103#if EXPT
104  printf("\nc = a ** b\n");
105  mp_expt(&a, &b, &c);
106  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
107#endif
108
109  ix = rand() % 256;
110  printf("\nc = 2^%d\n", ix);
111  mp_2expt(&c, ix);
112  printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
113
114#if SQRT
115  printf("\nc = sqrt(a)\n");
116  if((res = mp_sqrt(&a, &c)) != MP_OKAY) {
117    printf("mp_sqrt: %s\n", mp_strerror(res));
118  } else {
119    printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
120    mp_sqr(&c, &c);
121    printf("c^2 = "); mp_print(&c, stdout); fputc('\n', stdout);
122  }
123#endif
124
125  mp_clear(&d);
126  mp_clear(&c);
127  mp_clear(&b);
128  mp_clear(&a);
129
130  return 0;
131}