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 #include <sys/cdefs.h>
15
16 #include "rand48.h"
17
18 double
erand48(unsigned short xseed[3])19 erand48(unsigned short xseed[3])
20 {
21 __dorand48(xseed);
22 return ldexp((double) xseed[0], -48) +
23 ldexp((double) xseed[1], -32) +
24 ldexp((double) xseed[2], -16);
25 }
26