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
  56 int 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 }