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+## Copyright (C) 2005-2012 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} {} isequal (@var{x1}, @var{x2}, @dots{})
+## Return true if all of @var{x1}, @var{x2}, @dots{} are equal.
+## @seealso{isequalwithequalnans}
+## @end deftypefn
+
+function retval = isequal (x1, varargin)
+
+  if (nargin < 2)
+    print_usage ();
+  endif
+
+  retval = __isequal__ (false, x1, varargin{:});
+
+endfunction
+
+## test size and shape
+%!assert(isequal([1,2,3,4],[1,2,3,4]), true)
+%!assert(isequal([1;2;3;4],[1;2;3;4]), true)
+%!assert(isequal([1,2,3,4],[1;2;3;4]), false)
+%!assert(isequal([1,2,3,4],[1,2;3,4]), false)
+%!assert(isequal([1,2,3,4],[1,3;2,4]), false)
+
+%!test
+%! A = 1:8;
+%! B = reshape (A, 2, 2, 2);
+%! assert (isequal (A, B), false);
+
+%!test
+%! A = reshape (1:8, 2, 2, 2);
+%! B = A;
+%! assert (isequal (A, B), true);
+
+%!test
+%! A = reshape (1:8, 2, 4);
+%! B = reshape (A, 2, 2, 2);
+%! assert (isequal (A, B), false);
+
+## test for equality
+%!assert(isequal([1,2,3,4],[1,2,3,4]), true)
+%!assert(isequal(['a','b','c','d'],['a','b','c','d']), true)
+## Test multi-line strings
+%!assert(isequal(["test";"strings"],["test";"strings"],["test";"strings"]), true)
+## test for inequality
+%!assert(isequal([1,2,3,4],[1;2;3;4]),false)
+%!assert(isequal({1,2,3,4},[1,2,3,4]),false)
+%!assert(isequal([1,2,3,4],{1,2,3,4}),false)
+%!assert(isequal([1,2,NaN,4],[1,2,NaN,4]),false)
+%!assert(isequal(['a','b','c','d'],['a';'b';'c';'d']),false)
+%!assert(isequal({'a','b','c','d'},{'a';'b';'c';'d'}),false)
+## test for equality (struct)
+%!assert(isequal(struct('a',1,'b',2),struct('a',1,'b',2)),true)
+%!assert(isequal(struct('a',1,'b',2),struct('a',1,'b',2),struct('a',1,'b',2)),true)
+%!assert(isequal(struct('a','abc','b',2),struct('a','abc','b',2)),true)
+## test for inequality (struct)
+%!assert(isequal(struct('a',NaN,'b',2),struct('a',NaN,'b',2),struct('a',NaN,'b',2)),false)