xref: /haiku/src/system/libroot/posix/glibc/stdlib/seed48_r.c (revision 5af32e752606778be5dd7379f319fe43cb3f6b8c)
1*5af32e75SAxel Dörfler /* Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc.
2*5af32e75SAxel Dörfler    This file is part of the GNU C Library.
3*5af32e75SAxel Dörfler    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
4*5af32e75SAxel Dörfler 
5*5af32e75SAxel Dörfler    The GNU C Library is free software; you can redistribute it and/or
6*5af32e75SAxel Dörfler    modify it under the terms of the GNU Lesser General Public
7*5af32e75SAxel Dörfler    License as published by the Free Software Foundation; either
8*5af32e75SAxel Dörfler    version 2.1 of the License, or (at your option) any later version.
9*5af32e75SAxel Dörfler 
10*5af32e75SAxel Dörfler    The GNU C Library is distributed in the hope that it will be useful,
11*5af32e75SAxel Dörfler    but WITHOUT ANY WARRANTY; without even the implied warranty of
12*5af32e75SAxel Dörfler    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13*5af32e75SAxel Dörfler    Lesser General Public License for more details.
14*5af32e75SAxel Dörfler 
15*5af32e75SAxel Dörfler    You should have received a copy of the GNU Lesser General Public
16*5af32e75SAxel Dörfler    License along with the GNU C Library; if not, write to the Free
17*5af32e75SAxel Dörfler    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18*5af32e75SAxel Dörfler    02111-1307 USA.  */
19*5af32e75SAxel Dörfler 
20*5af32e75SAxel Dörfler #include <stdlib.h>
21*5af32e75SAxel Dörfler #include <string.h>
22*5af32e75SAxel Dörfler #include <limits.h>
23*5af32e75SAxel Dörfler 
24*5af32e75SAxel Dörfler int
__seed48_r(seed16v,buffer)25*5af32e75SAxel Dörfler __seed48_r (seed16v, buffer)
26*5af32e75SAxel Dörfler      unsigned short int seed16v[3];
27*5af32e75SAxel Dörfler      struct drand48_data *buffer;
28*5af32e75SAxel Dörfler {
29*5af32e75SAxel Dörfler   /* Save old value at a private place to be used as return value.  */
30*5af32e75SAxel Dörfler   memcpy (buffer->__old_x, buffer->__x, sizeof (buffer->__x));
31*5af32e75SAxel Dörfler 
32*5af32e75SAxel Dörfler   /* Install new state.  */
33*5af32e75SAxel Dörfler   buffer->__x[2] = seed16v[2];
34*5af32e75SAxel Dörfler   buffer->__x[1] = seed16v[1];
35*5af32e75SAxel Dörfler   buffer->__x[0] = seed16v[0];
36*5af32e75SAxel Dörfler   buffer->__a = 0x5deece66dull;
37*5af32e75SAxel Dörfler   buffer->__c = 0xb;
38*5af32e75SAxel Dörfler   buffer->__init = 1;
39*5af32e75SAxel Dörfler 
40*5af32e75SAxel Dörfler   return 0;
41*5af32e75SAxel Dörfler }
42*5af32e75SAxel Dörfler weak_alias (__seed48_r, seed48_r)
43