Xpetra_Operator.hpp

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#ifndef XPETRA_OPERATOR_HPP
#define XPETRA_OPERATOR_HPP

#include "Xpetra_ConfigDefs.hpp"

#include <Teuchos_Describable.hpp>
#include <Teuchos_BLAS_types.hpp>
#include <Teuchos_ScalarTraits.hpp>

#include "Xpetra_Map.hpp"
#include "Xpetra_MultiVector.hpp"

namespace Xpetra {

  template<class Scalar,
           class LocalOrdinal,
           class GlobalOrdinal,
           class Node = KokkosClassic::DefaultNode::DefaultNodeType>
  class Operator : virtual public Teuchos::Describable {
    typedef Xpetra::Map<LocalOrdinal,GlobalOrdinal,Node> Map;
    typedef Xpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> MultiVector;
  public:
    virtual ~Operator() { }

    typedef Scalar scalar_type;

    typedef LocalOrdinal local_ordinal_type;

    typedef GlobalOrdinal global_ordinal_type;

    typedef Node node_type;



    virtual Teuchos::RCP<const Map> getDomainMap() const = 0;

    virtual Teuchos::RCP<const Map> getRangeMap() const = 0;


    virtual void
    apply (const MultiVector& X, MultiVector& Y,
           Teuchos::ETransp mode = Teuchos::NO_TRANS,
           Scalar alpha = Teuchos::ScalarTraits<Scalar>::one(),
           Scalar beta = Teuchos::ScalarTraits<Scalar>::zero()) const = 0;

    virtual bool hasTransposeApply() const { return false; }


    virtual void removeEmptyProcessesInPlace(const RCP<const Map>& /* newMap */) { }

    virtual void residual(const MultiVector & X,
                          const MultiVector & B,
                          MultiVector& R) const = 0;

  };

} // Xpetra namespace

#define XPETRA_OPERATOR_SHORT
#endif // XPETRA_OPERATOR_HPP