Thyra_LinearOperatorDecl.hpp

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// 
//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
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#ifndef THYRA_LINEAROPERATOR_DECL_HPP
#define THYRA_LINEAROPERATOR_DECL_HPP

#include "Teuchos_Handle.hpp"
#include "Thyra_VectorSpaceDecl.hpp"
#include "Thyra_ConfigDefs.hpp"
#include "Thyra_LinearOpBase.hpp"

namespace Thyra
{

 template<class Scalar>
  class ConstLinearOperator 
    : public virtual Teuchos::ConstHandle<LinearOpBase<Scalar> >
  {
  public:

    ConstLinearOperator( const Teuchos::ENull _null = Teuchos::null )
      : Teuchos::ConstHandle<LinearOpBase<Scalar> >(){;}

    ConstLinearOperator(Teuchos::ConstHandleable<LinearOpBase<Scalar> >* rawPtr) 
      : Teuchos::ConstHandle<LinearOpBase<Scalar> >(rawPtr){;}

    ConstLinearOperator(const Teuchos::RCP<const LinearOpBase<Scalar> >& smartPtr) 
      : Teuchos::ConstHandle<LinearOpBase<Scalar> >(smartPtr){;}

    const VectorSpace<Scalar> domain() const ;

    const VectorSpace<Scalar> range() const ;

    void apply(const ConstVector<Scalar>& in,
               Vector<Scalar>& out,
               const Scalar& alpha = 1.0,
               const Scalar& beta = 0.0) const ;

    void applyTranspose(const ConstVector<Scalar>& in,
                        Vector<Scalar>& out,
                        const Scalar& alpha = 1.0,
                        const Scalar& beta = 0.0) const ;


    int numBlockRows() const ;

    int numBlockCols() const ;

    ConstLinearOperator<Scalar> getBlock(int blockRow, int blockCol) const ;

  };

  template<class Scalar>
  class LinearOperator 
    : public Teuchos::Handle<LinearOpBase<Scalar> >,
      public ConstLinearOperator<Scalar>
  {
  public:

    LinearOperator( const Teuchos::ENull _null = Teuchos::null )
      : Teuchos::Handle<LinearOpBase<Scalar> >(){;}

    LinearOperator(Teuchos::Handleable<LinearOpBase<Scalar> >* rawPtr) 
      : Teuchos::Handle<LinearOpBase<Scalar> >(rawPtr){;}

    LinearOperator(const Teuchos::RCP<LinearOpBase<Scalar> >& smartPtr) 
      : Teuchos::Handle<LinearOpBase<Scalar> >(smartPtr){;}

    LinearOperator<Scalar> getBlock(int blockRow, int blockCol) ;

  };

  template <class Scalar>
  ConstLinearOperator<Scalar>
  operator*(const Scalar& a, 
            const ConstLinearOperator<Scalar>& A);

  template <class Scalar>
  LinearOperator<Scalar>
  operator*(const Scalar& a, 
            const LinearOperator<Scalar>& A);

  template <class Scalar>
  ConstLinearOperator<Scalar>
  operator*(const ConstLinearOperator<Scalar>& A,
            const Scalar& a);

  template <class Scalar>
  LinearOperator<Scalar>
  operator*(const LinearOperator<Scalar>& A,
            const Scalar& a);

  template <class Scalar>
  ConstLinearOperator<Scalar>
  operator*(const ConstLinearOperator<Scalar>& A,
            const ConstLinearOperator<Scalar>& B);

  template <class Scalar>
  LinearOperator<Scalar>
  operator*(const LinearOperator<Scalar>& A,
            const LinearOperator<Scalar>& B);

  template <class Scalar>
  ConstLinearOperator<Scalar>
  operator+(const ConstLinearOperator<Scalar>& A,
            const ConstLinearOperator<Scalar>& B);

  template <class Scalar>
  LinearOperator<Scalar>
  operator+(const LinearOperator<Scalar>& A,
            const LinearOperator<Scalar>& B);
    
  template<class Scalar>
  ConstLinearOperator<Scalar>
  block2x2(
           const ConstLinearOperator<Scalar>&   A00,
           const ConstLinearOperator<Scalar>&   A01,
           const ConstLinearOperator<Scalar>&   A10,
           const ConstLinearOperator<Scalar>&   A11
           );

  template<class Scalar>
  ConstLinearOperator<Scalar>
  block2x1(
           const ConstLinearOperator<Scalar>&    A00,
           const ConstLinearOperator<Scalar>&   A10
           );

  template<class Scalar>
  ConstLinearOperator<Scalar>
  block1x2(
           const ConstLinearOperator<Scalar>&    A00,
           const ConstLinearOperator<Scalar>&   A01
           );
  
  template<class Scalar>
  LinearOperator<Scalar>
  block2x2(
           const LinearOperator<Scalar>&    A00,
           const LinearOperator<Scalar>&   A01,
           const LinearOperator<Scalar>&   A10,
           const LinearOperator<Scalar>&   A11
           );

  template<class Scalar>
  LinearOperator<Scalar>
  block2x1(
           const LinearOperator<Scalar>&    A00,
           const LinearOperator<Scalar>&   A10
           );

  template<class Scalar>
  LinearOperator<Scalar>
  block1x2(
           const LinearOperator<Scalar>&    A00,
           const LinearOperator<Scalar>&   A01
           );

  template<class Scalar>
  ConstLinearOperator<Scalar>
  identity( const VectorSpace<Scalar> &space );

  template<class Scalar>
  ConstLinearOperator<Scalar>
  zero( const VectorSpace<Scalar> &range, const VectorSpace<Scalar> &domain );

} // namespace Thyra

#endif

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