new file mode 100644
--- /dev/null
+++ b/liboctave/Range.h
@@ -0,0 +1,100 @@
+// Range.h                                               -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#if !defined (_Range_h)
+#define _Range_h 1
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include <iostream.h>
+
+class Range
+{
+ public:
+  Range (void);
+  Range (const Range& r);
+  Range (double b, double l);
+  Range (double b, double l, double i);
+
+  double base (void) const;
+  double limit (void) const;
+  double inc (void) const;
+  int nelem (void) const;
+
+  double min (void) const;
+  double max (void) const;
+
+  void set_base (double b);
+  void set_limit (double l);
+  void set_inc (double i);
+
+  friend ostream& operator << (ostream& os, const Range& r);
+  friend istream& operator >> (istream& is, Range& r);
+
+  void print_range (void);
+
+ private:
+  double _base;
+  double _limit;
+  double _inc;
+  int _nelem;
+
+  int nelem_internal (void) const;
+};
+
+inline Range::Range (void)
+  { _base = -1; _limit = -1; _inc = -1; _nelem = -1; }
+
+inline Range::Range (const Range& r)
+  { _base = r._base; _limit = r._limit; _inc = r._inc; _nelem = r._nelem; }
+
+inline Range::Range (double b, double l)
+  { _base = b; _limit = l; _inc = 1; _nelem = nelem_internal (); }
+
+inline Range::Range (double b, double l, double i)
+  { _base = b; _limit = l; _inc = i; _nelem = nelem_internal (); }
+
+inline double Range::base (void) const { return _base;  }
+inline double Range::limit (void) const { return _limit; }
+inline double Range::inc (void) const { return _inc;   }
+inline int Range::nelem (void) const { return _nelem; }
+
+inline void Range::set_base (double b) { _base = b;  }
+inline void Range::set_limit (double l) { _limit = l; }
+inline void Range::set_inc (double i) { _inc = i;   }
+
+// NOTE: max and min only return useful values if nelem > 0.
+
+inline double Range::min (void) const { return _inc > 0 ? _base : _limit; }
+inline double Range::max (void) const { return _inc > 0 ? _limit : _base; }
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/