mptest-8.c
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上传日期:2007-01-12
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- /*
- * Simple test driver for MPI library
- *
- * Test 8: Probabilistic primality tester
- *
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the MPI Arbitrary Precision Integer Arithmetic
- * library.
- *
- * The Initial Developer of the Original Code is Michael J. Fromberger.
- * Portions created by Michael J. Fromberger are
- * Copyright (C) 1998, 1999, 2000 Michael J. Fromberger.
- * All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the GPL.
- *
- * $Id: mptest-8.c,v 1.2 2000/08/22 01:19:26 nelsonb%netscape.com Exp $
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #include <limits.h>
- #include <time.h>
- #define MP_IOFUNC
- #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 <a>n", argv[0]);
- return 1;
- }
- printf("Test 8: Probabilistic primality testingnn");
- 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 primen");
- 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 %dn", ix + 1);
- if(mpp_pprime(&a, 5) == MP_NO) {
- printf("it is not primen");
- goto CLEANUP;
- }
- }
- printf("All tests passed; a is probably primen");
- CLEANUP:
- mp_clear(&a);
- return 0;
- }