--- a/scripts/general/isequal.m
+++ b/scripts/general/isequal.m
@@ -1,81 +1,35 @@
-## Copyright (C) 2000 Paul Kienzle
+## Copyright (C) 2005 William Poetra Yoga Hadisoeseno
 ##
 ## 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 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 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.
+## 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-## 02110-1301, USA.
+## along with Octave; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 ## -*- texinfo -*-
-## @deftypefn {Function File} {} isequal (@var{x1}, @var{x2}, @dots{}, @var{xN})
-## Return true if all parts of @var{x1}, @var{x2}, @dots{}, @var{xN} are
-## equal.
+## @deftypefn {Function File} {} isequal (@var{x1}, @var{x2}, ...)
+## Return true if all of @var{x1}, @var{x2}, ... are equal.
 ## @end deftypefn
+##
+## @seealso{isequalwithequalnans}
 
-## Author: Paul Kienzle
-## Adapted-by: jwe
-
-function t = isequal (x, varargin)
+function tf = isequal (x, varargin)
 
   if (nargin < 2)
-    usage ("isequal (x, y, ...)");
-  endif
+    usage ("isequal (x1, x2, ...)");
+  end
 
-  for arg = 1:length (varargin)
-    y = varargin{arg};
-    if (isstruct (x))
-      t = isstruct (y);
-      for [v, k] = x
-        t = (t
-	     && struct_contains (y, k)
-	     && isequal (getfield (x, k), getfield (y, k)));
-      endfor
-      for [v, k] = y
-        t = t && struct_contains (x, k);
-      endfor
-    elseif (islist (x))
-      t = islist(y) && length(x) == length(y);
-      if (! t)
-	return;
-      endif
-      for i = 1:length (x)
-	t = isequal (x{i}, y{i});
-	if (! t)
-	  return;
-	endif
-      endfor
-    elseif (any (size (x) != size (y)))
-      t = false;
-    elseif (iscell (x) || islist (x))
-      t = iscell (y) || islist (y);
-      if (! t)
-	return;
-      endif
-      x = x(:);
-      y = y(:);
-      for i = 1:length (x)
-	t = isequal (x{i}, y{i});
-	if (! t)
-	  return;
-	endif
-      endfor
-    else
-      t = all (x(:) == y(:));
-    endif
-    if (! t)
-      return;
-    endif
-  endfor
+  tf = __isequal__ (0, x, varargin{:});
 
 endfunction
+