new file mode 100644
--- /dev/null
+++ b/src/ov-streamoff.cc
@@ -0,0 +1,235 @@
+/*
+
+Copyright (C) 2003 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 <iostream>
+
+#include "Array.h"
+#include "Array.cc"
+#include "ArrayN.h"
+#include "ArrayN.cc"
+
+#include "defun.h"
+#include "error.h"
+#include "gripes.h"
+#include "ov-streamoff.h"
+#include "oct-obj.h"
+#include "unwind-prot.h"
+#include "utils.h"
+#include "ov-base-mat.h"
+#include "ov-base-mat.cc"
+
+INSTANTIATE_ARRAY_AND_ASSIGN (std::streamoff);
+
+template class ArrayN<std::streamoff>;
+
+template class octave_base_matrix<streamoff_array>;
+
+DEFINE_OCTAVE_ALLOCATOR (octave_streamoff);
+
+DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_streamoff,
+				     "streamoff", "streamoff");
+boolNDArray
+streamoff_array::all (int dim) const
+{
+  MX_ND_ANY_ALL_REDUCTION (MX_ND_ALL_EVAL (MX_ND_ALL_EXPR), true);
+}
+
+boolNDArray
+streamoff_array::any (int dim) const
+{
+  MX_ND_ANY_ALL_REDUCTION (MX_ND_ANY_EVAL (MX_ND_ANY_EXPR), false);
+}
+
+#if 0
+streamoff_array&
+streamoff_array::operator += (const streamoff_array& a)
+{
+  // XXX FIXME XXX 
+  return *this;
+}
+
+streamoff_array&
+streamoff_array::operator -= (const streamoff_array& a)
+{
+  // XXX FIXME XXX 
+  return *this;
+}
+#endif
+
+int
+streamoff_array::compute_index (Array<int>& ra_idx,
+				const dim_vector& dimensions)
+{
+  return ::compute_index (ra_idx, dimensions);
+}
+
+SND_CMP_OP (mx_el_eq, ==, std::streamoff, , streamoff_array, , FBM)
+SND_CMP_OP (mx_el_ne, !=, std::streamoff, , streamoff_array, , TBM)
+
+NDS_CMP_OP (mx_el_eq, ==, streamoff_array, , std::streamoff, , FBM)
+NDS_CMP_OP (mx_el_ne, !=, streamoff_array, , std::streamoff, , TBM)
+
+NDND_CMP_OP (mx_el_eq, ==, streamoff_array, , streamoff_array, , FBM, TBM)
+NDND_CMP_OP (mx_el_ne, !=, streamoff_array, , streamoff_array, , TBM, FBM)
+
+NDND_BIN_OP (streamoff_array, operator +, streamoff_array, streamoff_array, mx_inline_add)
+NDND_BIN_OP (streamoff_array, operator -, streamoff_array, streamoff_array, mx_inline_subtract)
+
+NDS_BIN_OP (streamoff_array, operator +, streamoff_array, std::streamoff, mx_inline_add)
+NDS_BIN_OP (streamoff_array, operator -, streamoff_array, std::streamoff, mx_inline_subtract)
+
+SND_BIN_OP (streamoff_array, operator +, std::streamoff, streamoff_array, mx_inline_add)
+SND_BIN_OP (streamoff_array, operator -, std::streamoff, streamoff_array, mx_inline_subtract)
+
+std::streamoff
+octave_streamoff::streamoff_value (void) const
+{
+  std::streamoff retval (-1);
+
+  if (numel () > 0)
+    {
+      // XXX FIXME XXX -- is warn_fortran_indexing the right variable here?
+      if (Vwarn_fortran_indexing)
+	gripe_implicit_conversion ("streamoff array", "scalar streamoff");
+
+      retval = matrix (0, 0);
+    }
+  else
+    gripe_invalid_conversion ("streamoff array", "scalar streamoff");
+
+  return retval;
+}
+
+void
+octave_streamoff::print (std::ostream& os, bool) const
+{
+  print_raw (os);
+  newline (os);
+}
+
+void
+octave_streamoff::print_raw (std::ostream& os, bool) const
+{
+  dim_vector dv = matrix.dims ();
+  os << "<" << dv.str () << " streamoff object>";
+}
+
+DEFUN (isstreamoff, args, ,
+  "-*- texinfo -*-\n\
+@deftypefn {Built-in Function} {} isstreamoff (@var{x})\n\
+Return true if @var{x} is a streamoff object.  Otherwise, return\n\
+false.\n\
+@end deftypefn")
+{
+  octave_value retval;
+
+  if (args.length () == 1)
+    retval = args(0).is_streamoff ();
+  else
+    print_usage ("isstreamoff");
+
+  return retval;
+}
+
+DEFUN (streamoff, args, ,
+  "-*- texinfo -*-\n\
+@deftypefn {Built-in Function} {} streamoff (@var{x})\n\
+@deftypefnx {Built-in Function} {} streamoff (@var{n}, @var{m})\n\
+Create a new streamoff array object.  If invoked with a single scalar\n\
+argument, @code{streamoff} returns a square streamoff array with\n\
+the dimension specified.  If you supply two scalar arguments,\n\
+@code{streamoff} takes them to be the number of rows and columns.\n\
+If given a vector with two elements, @code{streamoff} uses the values\n\
+of the elements as the number of rows and columns, respectively.\n\
+@end deftypefn")
+{
+  octave_value retval;
+
+  int nargin = args.length ();
+
+  dim_vector dims;
+
+  switch (nargin)
+    {
+    case 0:
+      dims = dim_vector (0, 0);
+      break;
+
+    case 1:
+      get_dimensions (args(0), "streamoff", dims);
+      break;
+
+    default:
+      {
+	dims.resize (nargin);
+
+	for (int i = 0; i < nargin; i++)
+	  {
+	    dims(i) = args(i).is_empty () ? 0 : args(i).nint_value ();
+
+	    if (error_state)
+	      {
+		error ("streamoff: expecting scalar arguments");
+		break;
+	      }
+	  }
+      }
+      break;
+    }
+
+  if (! error_state)
+    {
+      int ndim = dims.length ();
+
+      check_dimensions (dims, "streamoff");
+
+      if (! error_state)
+	{
+	  switch (ndim)
+	    {
+	    case 1:
+	      retval = Cell (dims(0), dims(0), Matrix ());
+	      break;
+
+	    default:
+	      retval = Cell (dims, Matrix ());
+	      break;
+	    }
+	}
+    }
+
+  return retval;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/