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91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
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/*
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* prng.c
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*
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* Command-line pseudo-random number generator
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
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*
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* The Initial Developer of the Original Code is
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* Michael J. Fromberger.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* $Id: prng.c,v 1.4 2004/04/27 23:04:37 gerv%gerv.net Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <time.h>
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#ifdef __OS2__
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#include <types.h>
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#include <process.h>
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#else
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#include <unistd.h>
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#endif
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#include "bbs_rand.h"
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int main(int argc, char *argv[])
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{
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unsigned char *seed;
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unsigned int ix, num = 1;
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pid_t pid;
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if(argc > 1) {
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num = atoi(argv[1]);
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if(num <= 0)
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num = 1;
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}
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pid = getpid();
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srand(time(NULL) * (unsigned int)pid);
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/* Not a perfect seed, but not bad */
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seed = malloc(bbs_seed_size);
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for(ix = 0; ix < bbs_seed_size; ix++) {
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seed[ix] = rand() % UCHAR_MAX;
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}
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bbs_srand(seed, bbs_seed_size);
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memset(seed, 0, bbs_seed_size);
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free(seed);
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while(num-- > 0) {
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ix = bbs_rand();
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printf("%u\n", ix);
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}
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return 0;
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}
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