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mptest-7.c
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00001 /*
00002  *  Simple test driver for MPI library
00003  *
00004  *  Test 7: Random and divisibility tests
00005  *
00006  * ***** BEGIN LICENSE BLOCK *****
00007  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00008  *
00009  * The contents of this file are subject to the Mozilla Public License Version
00010  * 1.1 (the "License"); you may not use this file except in compliance with
00011  * the License. You may obtain a copy of the License at
00012  * http://www.mozilla.org/MPL/
00013  *
00014  * Software distributed under the License is distributed on an "AS IS" basis,
00015  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00016  * for the specific language governing rights and limitations under the
00017  * License.
00018  *
00019  * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
00020  *
00021  * The Initial Developer of the Original Code is
00022  * Michael J. Fromberger.
00023  * Portions created by the Initial Developer are Copyright (C) 1998
00024  * the Initial Developer. All Rights Reserved.
00025  *
00026  * Contributor(s):
00027  *
00028  * Alternatively, the contents of this file may be used under the terms of
00029  * either the GNU General Public License Version 2 or later (the "GPL"), or
00030  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00031  * in which case the provisions of the GPL or the LGPL are applicable instead
00032  * of those above. If you wish to allow use of your version of this file only
00033  * under the terms of either the GPL or the LGPL, and not to allow others to
00034  * use your version of this file under the terms of the MPL, indicate your
00035  * decision by deleting the provisions above and replace them with the notice
00036  * and other provisions required by the GPL or the LGPL. If you do not delete
00037  * the provisions above, a recipient may use your version of this file under
00038  * the terms of any one of the MPL, the GPL or the LGPL.
00039  *
00040  * ***** END LICENSE BLOCK ***** */
00041 /* $Id: mptest-7.c,v 1.4.30.1 2006/03/16 16:37:34 rrelyea%redhat.com Exp $ */
00042 
00043 #include <stdio.h>
00044 #include <stdlib.h>
00045 #include <string.h>
00046 #include <ctype.h>
00047 #include <limits.h>
00048 #include <time.h>
00049 
00050 #define MP_IOFUNC 1
00051 #include "mpi.h"
00052 
00053 #include "mpprime.h"
00054 
00055 int main(int argc, char *argv[])
00056 {
00057   mp_digit  num;
00058   mp_int    a, b;
00059 
00060   srand(time(NULL));
00061 
00062   if(argc < 3) {
00063     fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
00064     return 1;
00065   }
00066 
00067   printf("Test 7: Random & divisibility tests\n\n");
00068 
00069   mp_init(&a);
00070   mp_init(&b);
00071 
00072   mp_read_radix(&a, argv[1], 10);
00073   mp_read_radix(&b, argv[2], 10);
00074 
00075   printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
00076   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
00077 
00078   if(mpp_divis(&a, &b) == MP_YES)
00079     printf("a is divisible by b\n");
00080   else
00081     printf("a is not divisible by b\n");
00082 
00083   if(mpp_divis(&b, &a) == MP_YES)
00084     printf("b is divisible by a\n");
00085   else
00086     printf("b is not divisible by a\n");
00087 
00088   printf("\nb = mpp_random()\n");
00089   mpp_random(&b);
00090   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
00091   mpp_random(&b);
00092   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
00093   mpp_random(&b);
00094   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
00095 
00096   printf("\nTesting a for divisibility by first 170 primes\n");
00097   num = 170;
00098   if(mpp_divis_primes(&a, &num) == MP_YES)
00099     printf("It is divisible by at least one of them\n");
00100   else
00101     printf("It is not divisible by any of them\n");
00102 
00103   mp_clear(&b);
00104   mp_clear(&a);
00105 
00106   return 0;
00107 }