TSFSimpleComposedOpDecl.hpp

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//           TSFExtended: Trilinos Solver Framework Extended
//                 Copyright (2004) Sandia Corporation
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#ifndef TSF_SIMPLE_COMPOSED_OP_DECL_HPP
#define TSF_SIMPLE_COMPOSED_OP_DECL_HPP


#include "SundanceDefs.hpp"
#include "TSFSimplifiedLinearOpBaseDecl.hpp"
#include "TSFLinearOperatorDecl.hpp"


namespace TSFExtended
{
using namespace Teuchos;
using namespace Sundance;



/**
 * Represent a composed operator A_0 * A_1 * ... * A_n.
 */
template <class Scalar>
class SimpleComposedOp : public SimplifiedLinearOpWithSpaces<Scalar>,
                         public Printable
{
public:
  /** */
  SimpleComposedOp(const Array<LinearOperator<Scalar> >& ops);
  
  /** */
  void applyOp(const Thyra::EOpTransp M_trans,
    const Vector<Scalar>& in,
    Vector<Scalar> out) const;

  
  /** */
  std::string description() const ;

  /** */
  void print(std::ostream& os) const ;

private:
  Array<LinearOperator<Scalar> > ops_;
};


template <class Scalar>
LinearOperator<Scalar> composedOperator(
  const Array<LinearOperator<Scalar> >& ops);


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

}

#endif