/*

 *  Simple test driver for MPI library

 *

 *  Test 8: Probabilistic primality tester

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#include <limits.h>

#include <time.h>

#define MP_IOFUNC 1

#include "mpi.h"

#include "mpprime.h"

int main(int argc, char *argv[])

{

  int       ix;

  mp_digit  num;

  mp_int    a;

  srand(time(NULL));

  if(argc < 2) {

    fprintf(stderr, "Usage: %s \n", argv[0]);

    return 1;

  }

  printf("Test 8: Probabilistic primality testing\n\n");

  mp_init(&a);

  mp_read_radix(&a, argv[1], 10);

  printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);

  printf("\nChecking for divisibility by small primes ... \n");

  num = 170;

  if(mpp_divis_primes(&a, &num) == MP_YES) {

    printf("it is not prime\n");

    goto CLEANUP;

  }

  printf("Passed that test (not divisible by any small primes).\n");

  for(ix = 0; ix < 10; ix++) {

    printf("\nPerforming Rabin-Miller test, iteration %d\n", ix + 1);

    if(mpp_pprime(&a, 5) == MP_NO) {

      printf("it is not prime\n");

      goto CLEANUP;

    }

  }

  printf("All tests passed; a is probably prime\n");

CLEANUP:

  mp_clear(&a);

  return 0;

}