new file mode 100644
--- /dev/null
+++ b/liboctave/Array-util.h
@@ -0,0 +1,96 @@
+/*
+
+Copyright (C) 2000 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 (octave_Array_util_h)
+#define octave_Array_util_h 1
+
+#include <cassert>
+
+#include "Array.h"
+#include "dim-vector.h"
+#include "idx-vector.h"
+#include "lo-error.h"
+
+extern bool index_in_bounds (const Array<int>& ra_idx,
+			     const dim_vector& dimensions);
+
+extern void increment_index (Array<int>& ra_idx,
+			     const dim_vector& dimensions,
+			     int start_dimension = 0);
+
+extern int get_scalar_idx (Array<int>& idx, dim_vector& dims);
+
+extern int num_ones (const Array<int>& ra_idx);
+
+extern bool is_scalar (const dim_vector& dim);
+
+extern bool any_ones (const Array<int>& arr);
+
+extern int compute_index (const Array<int>& ra_idx, const dim_vector& dims);
+
+extern Array<int> conv_to_int_array (const Array<idx_vector>& a);
+
+extern Array<idx_vector> conv_to_array (const idx_vector *tmp, const int len);
+
+extern dim_vector freeze (Array<idx_vector>& ra_idx,
+			  const dim_vector& dimensions, int resize_ok);
+
+extern bool vector_equivalent (const Array<int>& ra_idx);
+
+extern bool equal_arrays (const dim_vector& a, const dim_vector& b);
+
+extern bool all_ok (const Array<idx_vector>& ra_idx);
+
+extern bool any_orig_empty (const Array<idx_vector>& ra_idx);
+
+extern bool any_zero_len (const dim_vector& frozen_lengths);
+
+extern dim_vector get_zero_len_size (const dim_vector& frozen_lengths,
+				     const dim_vector& dimensions);
+
+extern bool all_colon_equiv (const Array<idx_vector>& ra_idx,
+			     const dim_vector& frozen_lengths);
+
+extern bool is_in (int num, const idx_vector& idx);
+
+extern int how_many_lgt (const int num, idx_vector& idxv);
+
+extern bool all_ones (const Array<int>& arr);
+
+extern Array<int> get_elt_idx (const Array<idx_vector>& ra_idx,
+			       const Array<int>& result_idx);
+
+extern int number_of_elements (const dim_vector ra_idx);
+
+extern Array<int> get_ra_idx (int idx, const dim_vector& dims);
+
+extern dim_vector short_freeze (Array<idx_vector>& ra_idx,
+				const dim_vector& dimensions,
+				int resize_ok);
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/