erand48.c revision 1.2 
1/*
2 * Copyright (c) 1993 Martin Birgmeier
3 * All rights reserved.
4 *
5 * You may redistribute unmodified or modified versions of this source
6 * code provided that the above copyright notice and this and the
7 * following conditions are retained.
8 *
9 * This software is provided ``as is'', and comes with no warranties
10 * of any kind. I shall in no event be liable for anything that happens
11 * to anyone/anything when using this software.
12 */
13
14#if defined(LIBC_SCCS) && !defined(lint)
15static char rcsid[] = "$OpenBSD: erand48.c,v 1.2 1996/08/19 08:33:29 tholo Exp $";
16#endif /* LIBC_SCCS and not lint */
17
18#include "rand48.h"
19
20double
21erand48(unsigned short xseed[3])
22{
23	__dorand48(xseed);
24	return ldexp((double) xseed[0], -48) +
25	       ldexp((double) xseed[1], -32) +
26	       ldexp((double) xseed[2], -16);
27}
28