# Copyright (C) 1994, 1995 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 2, 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, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

function secs = toc ()

# usage: toc
#
# Return the difference between the current wall-clock time and the
# time that the function tic () was last called, in seconds.
#
# See also: tic, clock, etime, cputime

  if (nargin != 0)
    warning ("toc: ignoring extra arguments");
  endif

  global _time_tic_called;

  if (exist ("_time_tic_called"))
    secs = etime (clock (), _time_tic_called);
  else
    warning ("toc called before timer set");
    secs = [];
  endif

endfunction