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--- /dev/null
+++ b/liboctave/FEGrid.h
@@ -0,0 +1,93 @@
+// FEGrid.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 (_FEGrid_h)
+#define _FEGrid_h 1
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include "Matrix.h"
+
+#ifndef Vector
+#define Vector ColumnVector
+#endif
+
+class FEGrid
+{
+public:
+
+  FEGrid (void);
+  FEGrid (const Vector& elbnds);
+  FEGrid (int nel, double width);
+  FEGrid (int nel, double left, double right);
+
+  int in_bounds (double x) const;
+
+  int element (double x) const;
+
+  double left (void) const;
+  double right (void) const;
+
+  Vector element_boundaries (void) const;
+
+  friend ostream& operator << (ostream&, const FEGrid&);
+
+protected:
+
+  Vector elem;
+
+private:
+
+  void error (const char* msg) const;
+  void nel_error (void) const;
+
+  void check_grid (void) const;
+};
+
+inline FEGrid::FEGrid (void) {}
+
+inline FEGrid::FEGrid (const Vector& elbnds)
+  { elem = elbnds; check_grid (); }
+
+inline int FEGrid::in_bounds (double x) const
+  { return (x >= left () && x <= right ()); }
+
+inline double FEGrid::left (void) const
+  { return elem.elem (0); }
+
+inline double FEGrid::right (void) const
+  { return elem.elem (elem.capacity () - 1); }
+
+inline Vector FEGrid::element_boundaries (void) const
+  { return elem; }
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/