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- // -*- C++ -*-
- /*
-
- Copyright (C) 1992, 1993, 1994, 1995 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_DiagMatrix_h)
- #define octave_DiagMatrix_h 1
-
- #include "Array.h"
-
- #include "dRowVector.h"
- #include "dColVector.h"
-
- #include "mx-defs.h"
-
- extern "C++" {
-
- class DiagMatrix : public DiagArray<double>
- {
- friend class SVD;
- friend class ComplexSVD;
-
- public:
-
- DiagMatrix (void) : DiagArray<double> () { }
- DiagMatrix (int n) : DiagArray<double> (n) { }
- DiagMatrix (int n, double val) : DiagArray<double> (n, val) { }
- DiagMatrix (int r, int c) : DiagArray<double> (r, c) { }
- DiagMatrix (int r, int c, double val) : DiagArray<double> (r, c, val) { }
- DiagMatrix (const RowVector& a) : DiagArray<double> (a) { }
- DiagMatrix (const ColumnVector& a) : DiagArray<double> (a) { }
- DiagMatrix (const DiagArray<double>& a) : DiagArray<double> (a) { }
- DiagMatrix (const DiagMatrix& a) : DiagArray<double> (a) { }
- // DiagMatrix (double a) : DiagArray<double> (1, a) { }
-
- DiagMatrix& operator = (const DiagMatrix& a)
- {
- DiagArray<double>::operator = (a);
- return *this;
- }
-
- // operator DiagArray<double>& () const { return *this; }
-
- int operator == (const DiagMatrix& a) const;
- int operator != (const DiagMatrix& a) const;
-
- DiagMatrix& fill (double val);
- DiagMatrix& fill (double val, int beg, int end);
- DiagMatrix& fill (const ColumnVector& a);
- DiagMatrix& fill (const RowVector& a);
- DiagMatrix& fill (const ColumnVector& a, int beg);
- DiagMatrix& fill (const RowVector& a, int beg);
-
- DiagMatrix transpose (void) const;
-
- friend DiagMatrix real (const ComplexDiagMatrix& a);
- friend DiagMatrix imag (const ComplexDiagMatrix& a);
-
- // resize is the destructive analog for this one
-
- Matrix extract (int r1, int c1, int r2, int c2) const;
-
- // extract row or column i.
-
- RowVector row (int i) const;
- RowVector row (char *s) const;
-
- ColumnVector column (int i) const;
- ColumnVector column (char *s) const;
-
- DiagMatrix inverse (void) const;
- DiagMatrix inverse (int& info) const;
-
- // diagonal matrix by diagonal matrix -> diagonal matrix operations
-
- DiagMatrix& operator += (const DiagMatrix& a);
- DiagMatrix& operator -= (const DiagMatrix& a);
-
- // diagonal matrix by diagonal matrix -> diagonal matrix operations
-
- friend DiagMatrix operator * (const DiagMatrix& a,
- const DiagMatrix& b);
-
- // other operations
-
- ColumnVector diag (void) const;
- ColumnVector diag (int k) const;
-
- // i/o
-
- friend ostream& operator << (ostream& os, const DiagMatrix& a);
-
- #define KLUDGE_DIAG_MATRICES
- #define TYPE double
- #define KL_DMAT_TYPE DiagMatrix
- #include "mx-kludge.h"
- #undef KLUDGE_DIAG_MATRICES
- #undef TYPE
- #undef KL_DMAT_TYPE
-
- private:
-
- DiagMatrix (double *d, int nr, int nc) : DiagArray<double> (d, nr, nc) { }
- };
-
- } // extern "C++"
-
- #endif
-
- /*
- ;;; Local Variables: ***
- ;;; mode: C++ ***
- ;;; page-delimiter: "^/\\*" ***
- ;;; End: ***
- */
-