diff options
author | Roland McGrath <roland@gnu.org> | 1992-05-22 07:12:32 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1992-05-22 07:12:32 +0000 |
commit | eb91e639cdd6e1e9ca1c7df1977d7a6390bc2151 (patch) | |
tree | 7834e482f4dc3a5edff6615ad99cf39bd820d312 /string | |
parent | 5be5a485264cfd83914367ea0fe5eebb2d3a5da3 (diff) |
Initial revision
Diffstat (limited to 'string')
-rw-r--r-- | string/strfry.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/string/strfry.c b/string/strfry.c new file mode 100644 index 0000000000..723a0ab975 --- /dev/null +++ b/string/strfry.c @@ -0,0 +1,46 @@ +/* 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) + { + srandom (time ((time_t *) NULL)); + init = 1; + } + + len = strlen (string); + for (i = 0; i < len; ++i) + { + size_t j = random () % len; + char c = string[i]; + string[i] = string[j]; + string[j] = c; + } + + return string; +} |