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+## Copyright (C) 2005-2013 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 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} {} isequalwithequalnans (@var{x1}, @var{x2}, @dots{})
+## This function has been deprecated.  Use @code{@file{isequaln}} instead.
+## @seealso{isequaln}
+## @end deftypefn
+
+## Deprecated in 3.8
+
+function retval = isequalwithequalnans (varargin)
+
+  persistent warned = false;
+  if (! warned)
+    warned = true;
+    warning ("Octave:deprecated-function",
+             "isequalwithequalnans is obsolete and will be removed from a future version of Octave, please use isequaln instead");
+  endif
+
+  retval = isequaln (varargin{:});
+
+endfunction
+
+
+## test for equality
+%!assert (isequalwithequalnans ({1,2,NaN,4},{1,2,NaN,4}), true)
+%!assert (isequalwithequalnans ([1,2,NaN,4],[1,2,NaN,4]), true)
+## test for inequality
+%!assert (isequalwithequalnans ([1,2,NaN,4],[1,NaN,3,4]), false)
+%!assert (isequalwithequalnans ([1,2,NaN,4],[1,2,3,4]), false)
+## test for equality (struct)
+%!assert (isequalwithequalnans (struct ('a',NaN,'b',2),struct ('a',NaN,'b',2),struct ('a',NaN,'b',2)), true)
+%!assert (isequalwithequalnans (1,2,1), false)
+