xref: /netbsd-src/lib/libc/stdlib/seed48.c (revision 4d7e773266e3c3f48566c86c0ad52d51c6454fd1)
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 "namespace.h"
15 #include "rand48.h"
16 
17 #ifdef __weak_alias
18 __weak_alias(seed48,_seed48);
19 #endif
20 
21 unsigned short *
22 seed48(unsigned short xseed[3])
23 {
24 	static unsigned short sseed[3];
25 
26 	sseed[0] = __rand48_seed[0];
27 	sseed[1] = __rand48_seed[1];
28 	sseed[2] = __rand48_seed[2];
29 	__rand48_seed[0] = xseed[0];
30 	__rand48_seed[1] = xseed[1];
31 	__rand48_seed[2] = xseed[2];
32 	__rand48_mult[0] = RAND48_MULT_0;
33 	__rand48_mult[1] = RAND48_MULT_1;
34 	__rand48_mult[2] = RAND48_MULT_2;
35 	__rand48_add = RAND48_ADD;
36 	return sseed;
37 }
38