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1 | /* Copyright (C) 1995 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If | |
17 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include <stdlib.h> | |
21 | ||
22 | int | |
23 | jrand48_r (xsubi, buffer, result) | |
24 | unsigned short int xsubi[3]; | |
25 | struct drand48_data *buffer; | |
26 | long *result; | |
27 | { | |
60478656 RM |
28 | /* Compute next state. */ |
29 | if (__drand48_iterate (xsubi, buffer) < 0) | |
30 | return -1; | |
31 | ||
32 | /* Store the result. */ | |
33 | if (sizeof (unsigned short int) == 2) | |
34 | *result = (xsubi[2] & 0x7fff) | xsubi[1]; | |
35 | else | |
36 | *result = xsubi[2] & 0x7fffffffl; | |
37 | ||
38 | if (xsubi[2] & (1 << (sizeof (xsubi[2]) * 8 - 1))) | |
39 | *result *= -1; | |
40 | ||
41 | return 0; | |
42 | } |