## Copyright (C) 2003, 2005, 2007 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or (at
## your option) any later version.
##
## Octave 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
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING.  If not, see
## <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn {Function File} {@var{dir} =} fullfile ()
## Return the name of the system's directory for temporary files.
## @end deftypefn

function dirname = tempdir ()

  dirname = getenv ("TMPDIR");
  if (isempty (dirname))
    dirname = P_tmpdir;
  endif

  if (! strcmp (dirname(end), filesep))
    strcat (dirname, filesep);
  endif

  if (! isdir (dirname))
    warning ("tempdir: `%s' does not exist or is not a directory", dirname);
  endif

endfunction