gfqrc.h

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// -*-C++-*- 

// Copyright (C) 2004 
// Christian Stimming <stimming@tuhh.de>

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation; either version 2, or
// (at your option) any later version.

// This library 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 Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

//      LAPACK++ (V. 1.1)
//      (C) 1992-1996 All Rights Reserved.


#ifndef _LA_GEN_QRFACT_COMPLEX_H
#define _LA_GEN_QRFACT_COMPLEX_H

#include "lafnames.h"
#include LA_VECTOR_COMPLEX_H
#include LA_GEN_MAT_COMPLEX_H

#include "lapack.h"

class DLLIMPORT LaGenQRFactComplex
{
      LaGenMatComplex _matA;
      LaVectorComplex _tau;

      mutable LaVectorComplex _work;

      // This assumes that the QR-decomposition is already copied into
      // A.
      void generateQ_internal(LaGenMatComplex &A) const;

   public:

      LaGenQRFactComplex();

      LaGenQRFactComplex(LaGenMatComplex &A);

      LaGenQRFactComplex(LaGenQRFactComplex &QR);

      ~LaGenQRFactComplex();

      void decomposeQR_IP(LaGenMatComplex& A);

      LaGenMatComplex& generateQ_IP();

      void generateQ(LaGenMatComplex &A) const;

      void Mat_Mult(LaGenMatComplex& C, bool hermitian, 
                    bool from_left) const;
};


#endif

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