new file mode 100644
--- /dev/null
+++ b/src/OPERATORS/op-ui16-ui16.cc
@@ -0,0 +1,139 @@
+/*
+
+Copyright (C) 1996, 1997 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, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION)
+#pragma implementation
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "gripes.h"
+#include "oct-obj.h"
+#include "ov.h"
+#include "ov-uint16.h"
+#include "ov-typeinfo.h"
+#include "ops.h"
+#include "xdiv.h"
+#include "xpow.h"
+
+// matrix unary ops.
+
+DEFNDUNOP_OP (not, uint16_matrix, uint16_array, !)
+DEFNDUNOP_OP (uminus, uint16_matrix, uint16_array, -)
+
+DEFUNOP (transpose, uint16_matrix)
+{
+  CAST_UNOP_ARG (const octave_uint16_matrix&);
+
+  if (v.ndims () > 2)
+    {
+      error ("transpose not defined for N-d objects");
+      return octave_value ();
+    }
+  else
+    return octave_value (v.uint16_array_value().transpose ());
+}
+
+//DEFNCUNOP_METHOD (incr, uint16_matrix, increment)
+//DEFNCUNOP_METHOD (decr, uint16_matrix, decrement)
+
+// matrix by matrix ops.
+
+DEFNDBINOP_OP (add, uint16_matrix, uint16_matrix, uint16_array, uint16_array, +)
+DEFNDBINOP_OP (sub, uint16_matrix, uint16_matrix, uint16_array, uint16_array, -)
+
+//DEFBINOP_OP (mul, uint16_matrix, uint16_matrix, *)
+//DEFBINOP_FN (div, uint16_matrix, uint16_matrix, xdiv)
+
+DEFBINOPX (pow, uint16_matrix, uint16_matrix)
+{
+  error ("can't do A ^ B for A and B both matrices");
+  return octave_value ();
+}
+
+//DEFBINOP_FN (ldiv, uint16_matrix, uint16_matrix, xleftdiv)
+
+DEFNDBINOP_FN (lt, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_lt)
+DEFNDBINOP_FN (le, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_le)
+DEFNDBINOP_FN (eq, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_eq)
+DEFNDBINOP_FN (ge, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_ge)
+DEFNDBINOP_FN (gt, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_gt)
+DEFNDBINOP_FN (ne, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_ne)
+
+DEFNDBINOP_FN (el_mul, uint16_matrix, uint16_matrix, uint16_array, uint16_array, product)
+
+DEFNDBINOP_FN (el_div, uint16_matrix, uint16_matrix, uint16_array, uint16_array, quotient)
+
+//DEFNDBINOP_FN (el_pow, uint16_matrix, uint16_matrix, uint16_array, uint16_array, elem_xpow)
+
+//DEFBINOP (el_ldiv, uint16_matrix, uint16_matrix)
+//{
+//  CAST_BINOP_ARGS (const octave_matrix&, const octave_matrix&);
+//
+//  return octave_value (quotient (v2.array_value (), v1.array_value ()));
+//}
+
+DEFNDBINOP_FN (el_and, uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_and)
+DEFNDBINOP_FN (el_or,  uint16_matrix, uint16_matrix, uint16_array, uint16_array, mx_el_or)
+
+DEFNDASSIGNOP_FN (assign, uint16_matrix, uint16_matrix, uint16_array, assign)
+
+void
+install_ui16_ui16_ops (void)
+{
+  INSTALL_UNOP (op_not, octave_uint16_matrix, not);
+  INSTALL_UNOP (op_uminus, octave_uint16_matrix, uminus);
+  INSTALL_UNOP (op_transpose, octave_uint16_matrix, transpose);
+  INSTALL_UNOP (op_hermitian, octave_uint16_matrix, transpose);
+
+  //  INSTALL_NCUNOP (op_incr, octave_uint16_matrix, incr);
+  //  INSTALL_NCUNOP (op_decr, octave_uint16_matrix, decr);
+
+  INSTALL_BINOP (op_add, octave_uint16_matrix, octave_uint16_matrix, add);
+  INSTALL_BINOP (op_sub, octave_uint16_matrix, octave_uint16_matrix, sub);
+  //  INSTALL_BINOP (op_mul, octave_uint16_matrix, octave_uint16_matrix, mul);
+  //  INSTALL_BINOP (op_div, octave_uint16_matrix, octave_uint16_matrix, div);
+  //  INSTALL_BINOP (op_pow, octave_uint16_matrix, octave_uint16_matrix, pow);
+  //  INSTALL_BINOP (op_ldiv, octave_uint16_matrix, octave_uint16_matrix, ldiv);
+  INSTALL_BINOP (op_lt, octave_uint16_matrix, octave_uint16_matrix, lt);
+  INSTALL_BINOP (op_le, octave_uint16_matrix, octave_uint16_matrix, le);
+  INSTALL_BINOP (op_eq, octave_uint16_matrix, octave_uint16_matrix, eq);
+  INSTALL_BINOP (op_ge, octave_uint16_matrix, octave_uint16_matrix, ge);
+  INSTALL_BINOP (op_gt, octave_uint16_matrix, octave_uint16_matrix, gt);
+  INSTALL_BINOP (op_ne, octave_uint16_matrix, octave_uint16_matrix, ne);
+  INSTALL_BINOP (op_el_mul, octave_uint16_matrix, octave_uint16_matrix, el_mul);
+  INSTALL_BINOP (op_el_div, octave_uint16_matrix, octave_uint16_matrix, el_div);
+  //  INSTALL_BINOP (op_el_pow, octave_uint16_matrix, octave_uint16_matrix, el_pow);
+  //  INSTALL_BINOP (op_el_ldiv, octave_uint16_matrix, octave_uint16_matrix, el_ldiv);
+  INSTALL_BINOP (op_el_and, octave_uint16_matrix, octave_uint16_matrix, el_and);
+  INSTALL_BINOP (op_el_or, octave_uint16_matrix, octave_uint16_matrix, el_or);
+
+  INSTALL_ASSIGNOP (op_asn_eq, octave_uint16_matrix, octave_uint16_matrix, assign);
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/