new file mode 100644
--- /dev/null
+++ b/liboctave/dColVector.h
@@ -0,0 +1,159 @@
+//                                  -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993, 1994 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 (octave_ColumnVector_h)
+#define octave_ColumnVector_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+#include "Array.h"
+
+#include "mx-defs.h"
+
+extern "C++" {
+
+class ColumnVector : public Array<double>
+{
+friend class RowVector;
+
+public:
+
+  ColumnVector (void) : Array<double> () { }
+  ColumnVector (int n) : Array<double> (n) { }
+  ColumnVector (int n, double val) : Array<double> (n, val) { }
+  ColumnVector (const Array<double>& a) : Array<double> (a) { }
+  ColumnVector (const ColumnVector& a) : Array<double> (a) { }
+//  ColumnVector (double a) : Array<double> (1, a) { }
+
+  ColumnVector& operator = (const ColumnVector& a)
+    {
+      Array<double>::operator = (a);
+      return *this;
+    }
+
+//  operator Array<double>& () const { return *this; }
+
+  int operator == (const ColumnVector& a) const;
+  int operator != (const ColumnVector& a) const;
+
+// destructive insert/delete/reorder operations
+
+  ColumnVector& insert (const ColumnVector& a, int r);
+
+  ColumnVector& fill (double val);
+  ColumnVector& fill (double val, int r1, int r2);
+
+  ColumnVector stack (const ColumnVector& a) const;
+
+  RowVector transpose (void) const;
+
+// resize is the destructive equivalent for this one
+
+  ColumnVector extract (int r1, int r2) const;
+
+// column vector by column vector -> column vector operations
+
+  ColumnVector& operator += (const ColumnVector& a);
+  ColumnVector& operator -= (const ColumnVector& a);
+
+// column vector by scalar -> column vector operations
+
+  friend ComplexColumnVector operator + (const ColumnVector& a,
+					 const Complex& s);  
+  friend ComplexColumnVector operator - (const ColumnVector& a,
+					 const Complex& s);
+  friend ComplexColumnVector operator * (const ColumnVector& a,
+					 const Complex& s);
+  friend ComplexColumnVector operator / (const ColumnVector& a,
+					 const Complex& s);
+
+// scalar by column vector -> column vector operations
+
+  friend ComplexColumnVector operator + (const Complex& s,
+					 const ColumnVector& a); 
+  friend ComplexColumnVector operator - (const Complex& s,
+					 const ColumnVector& a);
+  friend ComplexColumnVector operator * (const Complex& s,
+					 const ColumnVector& a);
+  friend ComplexColumnVector operator / (const Complex& s,
+					 const ColumnVector& a);
+
+// column vector by row vector -> matrix operations
+
+  friend Matrix operator * (const ColumnVector& a, const RowVector& a);
+
+  friend ComplexMatrix operator * (const ColumnVector& a,
+				   const ComplexRowVector& b);
+
+// column vector by column vector -> column vector operations
+
+  friend ComplexColumnVector operator + (const ComplexColumnVector& a,
+					 const ComplexColumnVector& b);
+
+  friend ComplexColumnVector operator - (const ComplexColumnVector& a,
+					 const ComplexColumnVector& b); 
+
+  friend ComplexColumnVector product (const ComplexColumnVector& a,
+				      const ComplexColumnVector& b); 
+
+  friend ComplexColumnVector quotient (const ComplexColumnVector& a,
+				       const ComplexColumnVector& b); 
+
+// other operations
+
+  friend ColumnVector map (d_d_Mapper f, const ColumnVector& a);
+  void map (d_d_Mapper f);
+
+  double min (void) const;
+  double max (void) const;
+
+// i/o
+
+  friend ostream& operator << (ostream& os, const ColumnVector& a);
+  friend ostream& operator >> (ostream& is, ColumnVector& a);
+
+#define KLUDGE_VECTORS
+#define TYPE double
+#define KL_VEC_TYPE ColumnVector
+#include "mx-kludge.h"
+#undef KLUDGE_VECTORS
+#undef TYPE
+#undef KL_VEC_TYPE
+
+private:
+
+  ColumnVector (double *d, int l) : Array<double> (d, l) { }
+};
+
+} // extern "C++"
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/