TSFSimpleAddedOpDecl.hpp

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



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


namespace TSFExtended
{
using namespace Teuchos;
using namespace Sundance;


/**
 * Represent a sum of operators A_0 + A_1 + ... + A_n.
 */
template <class Scalar>
class SimpleAddedOp : public SimplifiedLinearOpWithSpaces<Scalar>
{
public:
  /** */
  SimpleAddedOp(const Array<LinearOperator<Scalar> >& ops);

  /** */
  void applyOp(const Thyra::EOpTransp M_trans,
    const Vector<Scalar>& in,
    Vector<Scalar> out) const;
  
  /** */
  std::string description() const ;

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

/** \relates LinearOperator */
template <class Scalar>
LinearOperator<Scalar> addedOperator(
  const Array<LinearOperator<Scalar> >& ops);


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


}

#endif