Tpetra_LinearProblem_decl.hpp

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// @HEADER
// *****************************************************************************
//          Tpetra: Templated Linear Algebra Services Package
//
// Copyright 2008 NTESS and the Tpetra contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef TPETRA_LINEARPROBLEM_DECL_HPP
#define TPETRA_LINEARPROBLEM_DECL_HPP

 
#include "Teuchos_DataAccess.hpp"
 
#include "Tpetra_Vector_decl.hpp"
#include "Tpetra_MultiVector_decl.hpp"
#include "Tpetra_RowMatrix_decl.hpp"
#include "Tpetra_DistObject.hpp"
#include "Tpetra_Details_ExecutionSpacesUser.hpp"
 
namespace Tpetra {

 
template <class Scalar,
          class LocalOrdinal,
          class GlobalOrdinal,
          class Node>
class LinearProblem : public DistObject<Scalar, LocalOrdinal, GlobalOrdinal, Node>,
                      public Details::Spaces::User {
 private:
  using dist_object_type = DistObject<Scalar, LocalOrdinal, GlobalOrdinal, Node>;
 
 public:

 
  using map_type            = Map<LocalOrdinal, GlobalOrdinal, Node>;
  using row_matrix_type     = RowMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>;
  using multivector_type    = MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>;
  using vector_type         = Vector<Scalar, LocalOrdinal, GlobalOrdinal, Node>;
  using linear_problem_type = LinearProblem<Scalar, LocalOrdinal, GlobalOrdinal, Node>;




  LinearProblem();

  LinearProblem(const Teuchos::RCP<row_matrix_type>& A,
                const Teuchos::RCP<multivector_type>& X,
                const Teuchos::RCP<multivector_type>& B);

  LinearProblem(const LinearProblem<Scalar, LocalOrdinal,
                                    GlobalOrdinal, Node>& Problem);

  virtual ~LinearProblem() = default;




  void checkInput() const;



 
  virtual bool
  checkSizes(const SrcDistObject& source) override;




  void setMatrix(Teuchos::RCP<row_matrix_type> A) { A_ = A; }

  void setLHS(Teuchos::RCP<multivector_type> X) { X_ = X; }

  void setRHS(Teuchos::RCP<multivector_type> B) { B_ = B; }




  void leftScale(const Teuchos::RCP<const vector_type>& D,
                 Teuchos::ETransp mode = Teuchos::NO_TRANS);

  void rightScale(const Teuchos::RCP<const vector_type>& D,
                  Teuchos::ETransp mode = Teuchos::NO_TRANS);




  Teuchos::RCP<row_matrix_type> getMatrix() const { return (A_); }
  Teuchos::RCP<multivector_type> getLHS() const { return (X_); }
  Teuchos::RCP<multivector_type> getRHS() const { return (B_); }

 
 private:
  Teuchos::RCP<row_matrix_type> A_;
  Teuchos::RCP<multivector_type> X_;
  Teuchos::RCP<multivector_type> B_;
 
  LinearProblem& operator=(const LinearProblem<Scalar, LocalOrdinal,
                                               GlobalOrdinal, Node>& Problem) = default;
};
 
}  // namespace Tpetra
 
#endif  // TPETRA_LINEARPROBLEM_DECL_HPP