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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: ***
*/
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