13016Swollman/*
23016Swollman * Copyright (c) 1993 Martin Birgmeier
33016Swollman * All rights reserved.
43016Swollman *
53016Swollman * You may redistribute unmodified or modified versions of this source
63016Swollman * code provided that the above copyright notice and this and the
73016Swollman * following conditions are retained.
83016Swollman *
93016Swollman * This software is provided ``as is'', and comes with no warranties
103016Swollman * of any kind. I shall in no event be liable for anything that happens
113016Swollman * to anyone/anything when using this software.
123016Swollman */
133016Swollman
1492986Sobrien#include <sys/cdefs.h>
1592986Sobrien__FBSDID("$FreeBSD$");
1692986Sobrien
173016Swollman#include "rand48.h"
183016Swollman
193016Swollmandouble
203016Swollmanerand48(unsigned short xseed[3])
213016Swollman{
223016Swollman	_dorand48(xseed);
233016Swollman	return ldexp((double) xseed[0], -48) +
243016Swollman	       ldexp((double) xseed[1], -32) +
253016Swollman	       ldexp((double) xseed[2], -16);
263016Swollman}
27