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+++ b/liboctave/CDiagMatrix.h
@@ -0,0 +1,218 @@
+//                                  -*- 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_ComplexDiagMatrix_h)
+#define octave_ComplexDiagMatrix_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+#include "Array.h"
+
+#include "dRowVector.h"
+#include "CRowVector.h"
+#include "dColVector.h"
+#include "CColVector.h"
+
+#include "mx-defs.h"
+
+extern "C++" {
+
+class ComplexDiagMatrix : public DiagArray<Complex>
+{
+public:
+
+  ComplexDiagMatrix (void) : DiagArray<Complex> () { }
+  ComplexDiagMatrix (int n) : DiagArray<Complex> (n) { }
+  ComplexDiagMatrix (int n, const Complex& val)
+    : DiagArray<Complex> (n, val) { }
+  ComplexDiagMatrix (int r, int c) : DiagArray<Complex> (r, c) { }
+  ComplexDiagMatrix (int r, int c, const Complex& val)
+    : DiagArray<Complex> (r, c, val) { }
+  ComplexDiagMatrix (const RowVector& a);
+  ComplexDiagMatrix (const ComplexRowVector& a) : DiagArray<Complex> (a) { }
+  ComplexDiagMatrix (const ColumnVector& a);
+  ComplexDiagMatrix (const ComplexColumnVector& a)
+    : DiagArray<Complex> (a) { }
+  ComplexDiagMatrix (const DiagMatrix& a);
+  ComplexDiagMatrix (const DiagArray<Complex>& a)
+    : DiagArray<Complex> (a) { }
+  ComplexDiagMatrix (const ComplexDiagMatrix& a) : DiagArray<Complex> (a) { }
+//  ComplexDiagMatrix (const Complex& a) : DiagArray<Complex> (1, a) { }
+
+  ComplexDiagMatrix& operator = (const ComplexDiagMatrix& a)
+    {
+      DiagArray<Complex>::operator = (a);
+      return *this;
+    }
+
+//  operator DiagArray<Complex>& () const { return *this; }
+
+  int operator == (const ComplexDiagMatrix& a) const;
+  int operator != (const ComplexDiagMatrix& a) const;
+
+  ComplexDiagMatrix& fill (double val);
+  ComplexDiagMatrix& fill (const Complex& val);
+  ComplexDiagMatrix& fill (double val, int beg, int end);
+  ComplexDiagMatrix& fill (const Complex& val, int beg, int end);
+  ComplexDiagMatrix& fill (const ColumnVector& a);
+  ComplexDiagMatrix& fill (const ComplexColumnVector& a);
+  ComplexDiagMatrix& fill (const RowVector& a);
+  ComplexDiagMatrix& fill (const ComplexRowVector& a);
+  ComplexDiagMatrix& fill (const ColumnVector& a, int beg);
+  ComplexDiagMatrix& fill (const ComplexColumnVector& a, int beg);
+  ComplexDiagMatrix& fill (const RowVector& a, int beg);
+  ComplexDiagMatrix& fill (const ComplexRowVector& a, int beg);
+
+  ComplexDiagMatrix hermitian (void) const;  // complex conjugate transpose
+  ComplexDiagMatrix transpose (void) const;
+
+  friend DiagMatrix real (const ComplexDiagMatrix& a);
+  friend DiagMatrix imag (const ComplexDiagMatrix& a);
+  friend ComplexDiagMatrix conj (const ComplexDiagMatrix& a);
+
+// resize is the destructive analog for this one
+
+  ComplexMatrix extract (int r1, int c1, int r2, int c2) const;
+
+// extract row or column i.
+
+  ComplexRowVector row (int i) const;
+  ComplexRowVector row (char *s) const;
+
+  ComplexColumnVector column (int i) const;
+  ComplexColumnVector column (char *s) const;
+
+  ComplexDiagMatrix inverse (int& info) const;
+  ComplexDiagMatrix inverse (void) const;
+
+// diagonal matrix by diagonal matrix -> diagonal matrix operations
+
+  ComplexDiagMatrix& operator += (const DiagMatrix& a);
+  ComplexDiagMatrix& operator -= (const DiagMatrix& a);
+
+  ComplexDiagMatrix& operator += (const ComplexDiagMatrix& a);
+  ComplexDiagMatrix& operator -= (const ComplexDiagMatrix& a);
+
+// diagonal matrix by scalar -> matrix operations
+
+  friend ComplexMatrix operator + (const ComplexDiagMatrix& a, double s);
+  friend ComplexMatrix operator - (const ComplexDiagMatrix& a, double s);
+
+  friend ComplexMatrix operator + (const ComplexDiagMatrix& a,
+				   const Complex& s);
+  friend ComplexMatrix operator - (const ComplexDiagMatrix& a,
+				   const Complex& s);
+
+// diagonal matrix by scalar -> diagonal matrix operations
+
+  friend ComplexDiagMatrix operator * (const ComplexDiagMatrix& a, double s);
+  friend ComplexDiagMatrix operator / (const ComplexDiagMatrix& a, double s);
+
+// scalar by diagonal matrix -> matrix operations
+
+  friend ComplexMatrix operator + (double s, const ComplexDiagMatrix& a);
+  friend ComplexMatrix operator - (double s, const ComplexDiagMatrix& a);
+
+  friend ComplexMatrix operator + (const Complex& s,
+				   const ComplexDiagMatrix& a);
+  friend ComplexMatrix operator - (const Complex& s,
+				   const ComplexDiagMatrix& a);
+
+// scalar by diagonal matrix -> diagonal matrix operations
+
+  friend ComplexDiagMatrix operator * (double s, const ComplexDiagMatrix& a);
+
+// diagonal matrix by column vector -> column vector operations
+
+  friend ComplexColumnVector operator * (const ComplexDiagMatrix& a,
+					 const ColumnVector& b);
+
+  friend ComplexColumnVector operator * (const ComplexDiagMatrix& a,
+					 const ComplexColumnVector& b);
+
+// diagonal matrix by diagonal matrix -> diagonal matrix operations
+
+  friend ComplexDiagMatrix operator * (const ComplexDiagMatrix& a,
+				       const ComplexDiagMatrix& b);
+
+  friend ComplexDiagMatrix operator + (const ComplexDiagMatrix& a,
+				       const DiagMatrix& b);
+  friend ComplexDiagMatrix operator - (const ComplexDiagMatrix& a,
+				       const DiagMatrix& b);
+  friend ComplexDiagMatrix operator * (const ComplexDiagMatrix& a,
+				       const DiagMatrix& b);
+
+  friend ComplexDiagMatrix product (const ComplexDiagMatrix& a,
+				    const DiagMatrix& b); 
+
+// diagonal matrix by matrix -> matrix operations
+
+  friend ComplexMatrix operator + (const ComplexDiagMatrix& a,
+				   const Matrix& b); 
+  friend ComplexMatrix operator - (const ComplexDiagMatrix& a,
+				   const Matrix& b);
+  friend ComplexMatrix operator * (const ComplexDiagMatrix& a,
+				   const Matrix& b);
+
+  friend ComplexMatrix operator + (const ComplexDiagMatrix& a,
+				   const ComplexMatrix& b);
+  friend ComplexMatrix operator - (const ComplexDiagMatrix& a,
+				   const ComplexMatrix& b);
+  friend ComplexMatrix operator * (const ComplexDiagMatrix& a,
+				   const ComplexMatrix& b);
+
+// other operations
+
+  ComplexColumnVector diag (void) const;
+  ComplexColumnVector diag (int k) const;
+
+// i/o
+
+  friend ostream& operator << (ostream& os, const ComplexDiagMatrix& a);
+
+#define KLUDGE_DIAG_MATRICES
+#define TYPE Complex
+#define KL_DMAT_TYPE ComplexDiagMatrix
+#include "mx-kludge.h"
+#undef KLUDGE_DIAG_MATRICES
+#undef TYPE
+#undef KL_DMAT_TYPE
+
+private:
+
+  ComplexDiagMatrix (Complex *d, int nr, int nc)
+    : DiagArray<Complex> (d, nr, nc) { }
+};
+
+} // extern "C++"
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/