LOCA::MultiPredictor::Constant Class Reference

Constant predictor strategy More...

#include <LOCA_MultiPredictor_Constant.H>

Inheritance diagram for LOCA::MultiPredictor::Constant:

Collaboration diagram for LOCA::MultiPredictor::Constant:
List of all members.

Public Member Functions

 Constant (const Teuchos::RefCountPtr< LOCA::GlobalData > &global_data, const Teuchos::RefCountPtr< Teuchos::ParameterList > &predParams)
virtual ~Constant ()
 Constant (const Constant &source, NOX::CopyType type=NOX::DeepCopy)
 Copy constructor.
virtual LOCA::MultiPredictor::AbstractStrategyoperator= (const LOCA::MultiPredictor::AbstractStrategy &source)
 Assignment operator.
virtual Teuchos::RefCountPtr<
clone (NOX::CopyType type=NOX::DeepCopy) const
 Clone function.
virtual NOX::Abstract::Group::ReturnType compute (bool baseOnSecant, const vector< double > &stepSize, LOCA::MultiContinuation::ExtendedGroup &grp, const LOCA::MultiContinuation::ExtendedVector &prevXVec, const LOCA::MultiContinuation::ExtendedVector &xVec)
 Compute the predictor given the current and previous solution vectors. Set baseOnSecant to false if the predictor orientation should not be based on the secant vector (first or last steps of a continuation run).
virtual NOX::Abstract::Group::ReturnType evaluate (const vector< double > &stepSize, const LOCA::MultiContinuation::ExtendedVector &xVec, LOCA::MultiContinuation::ExtendedMultiVector &result) const
 Evaluate predictor with step size stepSize.
virtual NOX::Abstract::Group::ReturnType computeTangent (LOCA::MultiContinuation::ExtendedMultiVector &tangent)
 Compute tangent to predictor and store in tangent.
virtual bool isTangentScalable () const
 Is the tangent vector for this predictor scalable.

Protected Attributes

Teuchos::RefCountPtr< LOCA::GlobalDataglobalData
 LOCA global data object.
Teuchos::RefCountPtr< LOCA::MultiContinuation::ExtendedMultiVectorpredictor
 Stores predictor vector.
Teuchos::RefCountPtr< LOCA::MultiContinuation::ExtendedVectorsecant
 Stores secant vector for setting orientation.
bool initialized
 Flag indicating whether vectors have been initialized.

Detailed Description

Constant predictor strategy

This class computes the predictor direction given by a vector of zeros for the solution vector component and 1 for the parameter component. When used with natural continuation, this corresponds to what is commonly referred to as zero'th order continuation.

Constructor & Destructor Documentation

LOCA::MultiPredictor::Constant::Constant const Teuchos::RefCountPtr< LOCA::GlobalData > &  global_data,
const Teuchos::RefCountPtr< Teuchos::ParameterList > &  predParams


global_data [in] Global data object
predParams [in] Predictor parameters. None are currently referenced.

Member Function Documentation

NOX::Abstract::Group::ReturnType LOCA::MultiPredictor::Constant::compute bool  baseOnSecant,
const vector< double > &  stepSize,
LOCA::MultiContinuation::ExtendedGroup grp,
const LOCA::MultiContinuation::ExtendedVector prevXVec,
const LOCA::MultiContinuation::ExtendedVector xVec

Compute the predictor given the current and previous solution vectors. Set baseOnSecant to false if the predictor orientation should not be based on the secant vector (first or last steps of a continuation run).

This method actually implements the predictor computation described above

Implements LOCA::MultiPredictor::AbstractStrategy.

NOX::Abstract::Group::ReturnType LOCA::MultiPredictor::Constant::evaluate const vector< double > &  stepSize,
const LOCA::MultiContinuation::ExtendedVector xVec,
LOCA::MultiContinuation::ExtendedMultiVector result
const [virtual]

Evaluate predictor with step size stepSize.

This method computes result[i] = xVec[i] + stepSize[i] * v[i] for each i, where v[i] is the ith predictor direction.

Implements LOCA::MultiPredictor::AbstractStrategy.

bool LOCA::MultiPredictor::Constant::isTangentScalable  )  const [virtual]

Is the tangent vector for this predictor scalable.

For the constant predictor, this always returns false.

Implements LOCA::MultiPredictor::AbstractStrategy.

The documentation for this class was generated from the following files:
Generated on Thu Sep 18 12:38:34 2008 for NOX by doxygen