Thyra::MultipliedLinearOpBase< Scalar > Class Template Reference

Interface class for implicitly multiplied linear operators. More...

#include <Thyra_MultipliedLinearOpBase.hpp>

List of all members.

Pure virtual functions that must be overridden by subclasses
virtual int	numOps () const =0
	Returns the number of constituent operators.
virtual bool	opIsConst (const int k) const =0
	Determine if the kth constituent operator is const-only or not.
virtual Teuchos::RefCountPtr< LinearOpBase< Scalar > >	getNonconstOp (const int k)=0
	Return the kth non-constant constituent operator.
virtual Teuchos::RefCountPtr< const LinearOpBase< Scalar > >	getOp (const int k) const =0
	Return the kth constant constituent operator.

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Detailed Description

template<class Scalar>
class Thyra::MultipliedLinearOpBase< Scalar >

Interface class for implicitly multiplied linear operators.

This interface represents a multiplied linear operator M of the form:

 
 M = Op[0] * Op[1] * ... * Op[numOps-1]
 

where Op[] is an array of numOps LinearOpBase objects. Of course the operator M is not constructed explicitly but instead just applies the constituent linear operators accordingly using temporaries.

In other words, subclasses define apply() as:

 y = alpha*M*x + beta*y
   = alpha * ( Op[0] * ( Op[1] * ( .... ( Op[numOps-1] * x ) ... ) ) ) + beta * y
 

Definition at line 60 of file Thyra_MultipliedLinearOpBase.hpp.

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Member Function Documentation

template<class Scalar> virtual int Thyra::MultipliedLinearOpBase< Scalar >::numOps (   )  const [pure virtual]

Returns the number of constituent operators. A return value of 0 indicates that this is not fully initialized.

template<class Scalar> virtual bool Thyra::MultipliedLinearOpBase< Scalar >::opIsConst (  const int  k  )  const [pure virtual]

Determine if the kth constituent operator is const-only or not. Parameters: k  [in] The zero-based index of the constituent operator to return. Preconditions: 0 <= k < this->numOps()

template<class Scalar> virtual Teuchos::RefCountPtr<LinearOpBase<Scalar> > Thyra::MultipliedLinearOpBase< Scalar >::getNonconstOp (  const int  k  )  [pure virtual]

Return the kth non-constant constituent operator. Parameters: k  [in] The zero-based index of the constituent operator to return. Preconditions: 0 <= k < this->numOps() this->opIsConst(k)==false

template<class Scalar> virtual Teuchos::RefCountPtr<const LinearOpBase<Scalar> > Thyra::MultipliedLinearOpBase< Scalar >::getOp (  const int  k  )  const [pure virtual]

Return the kth constant constituent operator. Parameters: k  [in] The zero-based index of the constituent operator to return. Preconditions: 0 <= k < this->numOps()

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The documentation for this class was generated from the following file:

• Thyra_MultipliedLinearOpBase.hpp

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