srand48.c revision 1.4 
1/*	$OpenBSD: srand48.c,v 1.4 2014/12/08 21:45:20 deraadt Exp $ */
2/*
3 * Copyright (c) 1993 Martin Birgmeier
4 * All rights reserved.
5 *
6 * You may redistribute unmodified or modified versions of this source
7 * code provided that the above copyright notice and this and the
8 * following conditions are retained.
9 *
10 * This software is provided ``as is'', and comes with no warranties
11 * of any kind. I shall in no event be liable for anything that happens
12 * to anyone/anything when using this software.
13 */
14
15#include "rand48.h"
16
17extern unsigned short __rand48_seed[3];
18extern unsigned short __rand48_mult[3];
19extern unsigned short __rand48_add;
20
21int     __rand48_deterministic;
22
23void
24srand48(long seed)
25{
26	srand48_deterministic(seed);
27	__rand48_deterministic = 0;
28}
29
30void
31srand48_deterministic(long seed)
32{
33	__rand48_deterministic = 1;
34	__rand48_seed[0] = RAND48_SEED_0;
35	__rand48_seed[1] = (unsigned short) seed;
36	__rand48_seed[2] = (unsigned short) (seed >> 16);
37	__rand48_mult[0] = RAND48_MULT_0;
38	__rand48_mult[1] = RAND48_MULT_1;
39	__rand48_mult[2] = RAND48_MULT_2;
40	__rand48_add = RAND48_ADD;
41}
42