michael@0: /*
michael@0:  *  Simple test driver for MPI library
michael@0:  *
michael@0:  *  Test 7: Random and divisibility tests
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <stdlib.h>
michael@0: #include <string.h>
michael@0: #include <ctype.h>
michael@0: #include <limits.h>
michael@0: #include <time.h>
michael@0: 
michael@0: #define MP_IOFUNC 1
michael@0: #include "mpi.h"
michael@0: 
michael@0: #include "mpprime.h"
michael@0: 
michael@0: int main(int argc, char *argv[])
michael@0: {
michael@0:   mp_digit  num;
michael@0:   mp_int    a, b;
michael@0: 
michael@0:   srand(time(NULL));
michael@0: 
michael@0:   if(argc < 3) {
michael@0:     fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
michael@0:     return 1;
michael@0:   }
michael@0: 
michael@0:   printf("Test 7: Random & divisibility tests\n\n");
michael@0: 
michael@0:   mp_init(&a);
michael@0:   mp_init(&b);
michael@0: 
michael@0:   mp_read_radix(&a, argv[1], 10);
michael@0:   mp_read_radix(&b, argv[2], 10);
michael@0: 
michael@0:   printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
michael@0:   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
michael@0: 
michael@0:   if(mpp_divis(&a, &b) == MP_YES)
michael@0:     printf("a is divisible by b\n");
michael@0:   else
michael@0:     printf("a is not divisible by b\n");
michael@0: 
michael@0:   if(mpp_divis(&b, &a) == MP_YES)
michael@0:     printf("b is divisible by a\n");
michael@0:   else
michael@0:     printf("b is not divisible by a\n");
michael@0: 
michael@0:   printf("\nb = mpp_random()\n");
michael@0:   mpp_random(&b);
michael@0:   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
michael@0:   mpp_random(&b);
michael@0:   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
michael@0:   mpp_random(&b);
michael@0:   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
michael@0: 
michael@0:   printf("\nTesting a for divisibility by first 170 primes\n");
michael@0:   num = 170;
michael@0:   if(mpp_divis_primes(&a, &num) == MP_YES)
michael@0:     printf("It is divisible by at least one of them\n");
michael@0:   else
michael@0:     printf("It is not divisible by any of them\n");
michael@0: 
michael@0:   mp_clear(&b);
michael@0:   mp_clear(&a);
michael@0: 
michael@0:   return 0;
michael@0: }