1## Copyright (C) 2004, 2006, 2007 Alois Schloegl
2##
3## This file is part of Octave.
4##
5## Octave is free software; you can redistribute it and/or modify it
6## under the terms of the GNU General Public License as published by
7## the Free Software Foundation; either version 3 of the License, or (at
8## your option) any later version.
9##
10## Octave is distributed in the hope that it will be useful, but
11## WITHOUT ANY WARRANTY; without even the implied warranty of
12## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13## General Public License for more details.
14##
15## You should have received a copy of the GNU General Public License
16## along with Octave; see the file COPYING.  If not, see
17## <http://www.gnu.org/licenses/>.
18
19## -*- texinfo -*-
20## @deftypefn {Function File} {} isdir (@var{f})
21## Return true if @var{f} is a directory.
22## @end deftypefn
23
24function t = isdir (x)
25  if (nargin == 1)
26    ## Exist returns an integer but isdir should return a logical.
27    t = exist (x, "dir") == 7;
28  else
29    print_usage ("isdir");
30  endif
31endfunction
32