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[glibc/history.git] / stdlib / nrand48_r.c
blobdbc50bb3972e9ec26633600b67de7671120f2566
1 /* Copyright (C) 1995, 1997 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.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <stdlib.h>
22 int
23 __nrand48_r (xsubi, buffer, result)
24 unsigned short int xsubi[3];
25 struct drand48_data *buffer;
26 long int *result;
28 /* Compute next state. */
29 if (__drand48_iterate (xsubi, buffer) < 0)
30 return -1;
32 /* Store the result. */
33 if (sizeof (unsigned short int) == 2)
34 *result = xsubi[2] << 15 | xsubi[1] >> 1;
35 else
36 *result = xsubi[2] >> 1;
38 return 0;
40 weak_alias (__nrand48_r, nrand48_r)