Thyra_DefaultInverseLinearOpDecl.hpp

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//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef THYRA_DEFAULT_INVERSE_LINEAR_OP_DECL_HPP
#define THYRA_DEFAULT_INVERSE_LINEAR_OP_DECL_HPP

#include "Thyra_InverseLinearOpBase.hpp"
#include "Thyra_SingleScalarLinearOpBase.hpp"
#include "Teuchos_ConstNonconstObjectContainer.hpp"
#include "Teuchos_arrayArg.hpp"

namespace Thyra {


enum EThrowOnSolveFailure {
  THROW_ON_SOLVE_FAILURE=1 
  ,IGNORE_SOLVE_FAILURE=0  
};


template<class Scalar>
class DefaultInverseLinearOp
  : virtual public InverseLinearOpBase<Scalar>,            // Public interface
    virtual protected SingleScalarLinearOpBase<Scalar>     // Implementation detail
{
public:

  using SingleScalarLinearOpBase<Scalar>::apply;


  DefaultInverseLinearOp();

  DefaultInverseLinearOp(
    const Teuchos::RCP<LinearOpWithSolveBase<Scalar> > &lows,
    const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
    const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
    );

  DefaultInverseLinearOp(
    const Teuchos::RCP<const LinearOpWithSolveBase<Scalar> > &lows,
    const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
    const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnAdjSolveFailure  = THROW_ON_SOLVE_FAILURE
    );

  void initialize(
    const Teuchos::RCP<LinearOpWithSolveBase<Scalar> > &lows,
    const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
    const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
    );

  void initialize(
    const Teuchos::RCP<const LinearOpWithSolveBase<Scalar> > &lows,
    const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
    const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
    const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
    );

  void uninitialize();



  bool isLowsConst() const;
  Teuchos::RCP<LinearOpWithSolveBase<Scalar> >
  getNonconstLows(); 
  Teuchos::RCP<const LinearOpWithSolveBase<Scalar> >
  getLows() const; 



  Teuchos::RCP< const VectorSpaceBase<Scalar> > range() const;

  Teuchos::RCP< const VectorSpaceBase<Scalar> > domain() const;

  Teuchos::RCP<const LinearOpBase<Scalar> > clone() const;


                                                
  std::string description() const;

  void describe(
    Teuchos::FancyOStream &out,
    const Teuchos::EVerbosityLevel verbLevel
    ) const;


protected:


  bool opSupported(ETransp M_trans) const;

  void apply(
    const ETransp M_trans,
    const MultiVectorBase<Scalar> &X,
    MultiVectorBase<Scalar> *Y,
    const Scalar alpha,
    const Scalar beta
    ) const;


private:

  Teuchos::ConstNonconstObjectContainer<LinearOpWithSolveBase<Scalar> > lows_;
  Teuchos::RCP<SolveCriteria<Scalar> > fwdSolveCriteria_;
  EThrowOnSolveFailure throwOnFwdSolveFailure_;
  Teuchos::RCP<SolveCriteria<Scalar> > adjSolveCriteria_;
  EThrowOnSolveFailure throwOnAdjSolveFailure_;
  
  void assertInitialized() const;

  template<class LOWS>
  void initializeImpl(
    const Teuchos::RCP<LOWS> &lows,
    const SolveCriteria<Scalar> *fwdSolveCriteria,
    const EThrowOnSolveFailure throwOnFwdSolveFailure,
    const SolveCriteria<Scalar> *adjSolveCriteria,
    const EThrowOnSolveFailure throwOnAdjSolveFailure
    );

  // Not defined and not to be called
  DefaultInverseLinearOp(const DefaultInverseLinearOp&);
  DefaultInverseLinearOp& operator=(const DefaultInverseLinearOp&);

};


template<class Scalar>
Teuchos::RCP<LinearOpBase<Scalar> >
nonconstInverse(
 const Teuchos::RCP<LinearOpWithSolveBase<Scalar> > &A,
 const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
 const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
 const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
 const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
  );


template<class Scalar>
Teuchos::RCP<LinearOpBase<Scalar> >
inverse(
  const Teuchos::RCP<const LinearOpWithSolveBase<Scalar> > &A,
  const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
  const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
  const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
  const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
  );


// /////////////////////////////////
// Inline members


template<class Scalar>
inline
void DefaultInverseLinearOp<Scalar>::assertInitialized() const
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT( !lows_.getConstObj().get() );
#endif
}


} // end namespace Thyra


#endif  // THYRA_DEFAULT_INVERSE_LINEAR_OP_DECL_HPP

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