erand48.c revision 1.4 
1/*	$OpenBSD: erand48.c,v 1.4 2015/09/13 08:31:47 guenther 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
17double
18erand48(unsigned short xseed[3])
19{
20	__dorand48(xseed);
21	return ldexp((double) xseed[0], -48) +
22	       ldexp((double) xseed[1], -32) +
23	       ldexp((double) xseed[2], -16);
24}
25DEF_WEAK(erand48);
26