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// Thyra: Interfaces and Support for Abstract Numerical Algorithms
// Copyright (2004) Sandia Corporation
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#ifndef THYRA_SCALED_MODEL_EVALUATOR_HPP
#define THYRA_SCALED_MODEL_EVALUATOR_HPP
#include "Thyra_ModelEvaluatorDelegatorBase.hpp"
namespace Thyra {
/** \brief This class decorates a ModelEvaluator and returns scaled
* residual and Jacobian values.
*
* Given a scaling vector <tt>s</tt>, this object is treated as a diagonal
* scaling matrix and applied to <tt>x -> Sf(x)</tt> and <tt>x -> sW</tt>.
*
* \ingroup Thyra_Nonlin_ME_support_grp
*/
template<class Scalar>
class ScaledModelEvaluator :
virtual public ModelEvaluatorDelegatorBase<Scalar>
{
public:
/** \brief Constructs to uninitialized */
ScaledModelEvaluator();
/** \brief . */
std::string description() const;
/** \brief . */
void set_f_scaling(const RCP<const Thyra::VectorBase<Scalar> >& f_scaling);
private:
/** \name Private functions overridden from ModelEvaulatorDefaultBase. */
//@{
/** \brief . */
void evalModelImpl(
const Thyra::ModelEvaluatorBase::InArgs<Scalar> &inArgs,
const Thyra::ModelEvaluatorBase::OutArgs<Scalar> &outArgs
) const;
//@}
private:
//* Diagonal scaling vector */
RCP<const Thyra::VectorBase<Scalar> > f_scaling_;
};
/** \brief Nonmember constructor. */
template<class Scalar>
RCP<ScaledModelEvaluator<Scalar> >
createNonconstScaledModelEvaluator(const RCP<ModelEvaluator<Scalar > > &model)
{
RCP<ScaledModelEvaluator<Scalar> > srme(new ScaledModelEvaluator<Scalar>);
srme->initialize(model);
return srme;
}
} // namespace Thyra
#endif // THYRA_SCALED_MODEL_EVALUATOR_HPP
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