1 /* Copyright (C) 1992, 1996, 1999, 2002, 2007 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
28 static struct random_data rdata;
32 static char state[32];
34 __initstate_r (time ((time_t *) NULL) ^ getpid (),
35 state, sizeof (state), &rdata);
39 size_t len = strlen (string);
41 for (size_t i = 0; i < len - 1; ++i)
44 __random_r (&rdata, &j);
45 j = j % (len - i) + i;
48 string[i] = string[j];