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initial import

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Roland McGrath
1995-02-18 01:27:10 +00:00
commit 28f540f45b
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string/strfry.c Normal file
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/* Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
char *
DEFUN(strfry, (string), char *string)
{
static int init = 0;
size_t len, i;
if (!init)
{
srand (time ((time_t *) NULL));
init = 1;
}
len = strlen (string);
for (i = 0; i < len; ++i)
{
size_t j = rand () % len;
char c = string[i];
string[i] = string[j];
string[j] = c;
}
return string;
}