1a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes/* $NetBSD: rand_r.c,v 1.6 2012/06/25 22:32:45 abs Exp $ */ 2a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes 3a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes/*- 4a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * Copyright (c) 1990 The Regents of the University of California. 5a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * All rights reserved. 6a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * 7a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * Redistribution and use in source and binary forms, with or without 8a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * modification, are permitted provided that the following conditions 9a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * are met: 10a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * 1. Redistributions of source code must retain the above copyright 11a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * notice, this list of conditions and the following disclaimer. 12a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 13a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * notice, this list of conditions and the following disclaimer in the 14a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * documentation and/or other materials provided with the distribution. 15a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * 3. Neither the name of the University nor the names of its contributors 16a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * may be used to endorse or promote products derived from this software 17a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * without specific prior written permission. 18a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * 19a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes * SUCH DAMAGE. 30a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes */ 31a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes 32a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#include <sys/cdefs.h> 33a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#if defined(LIBC_SCCS) && !defined(lint) 34a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#if 0 35a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughesstatic char *sccsid = "from: @(#)rand.c 5.6 (Berkeley) 6/24/91"; 36a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#else 37a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes__RCSID("$NetBSD: rand_r.c,v 1.6 2012/06/25 22:32:45 abs Exp $"); 38a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#endif 39a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#endif /* LIBC_SCCS and not lint */ 40a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes 41a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#include <assert.h> 42a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#include <errno.h> 43a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes#include <stdlib.h> 44a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes 45a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughesint 46a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughesrand_r(unsigned int *seed) 47a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes{ 48a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes _DIAGASSERT(seed != NULL); 49a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes 50a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes return ((*seed = *seed * 1103515245 + 12345) & RAND_MAX); 51a0beeeabbc8735bc830544cbbb1d920122b8d958Elliott Hughes} 52