class HCL_LinCombLinearOp_d : public HCL_LinearOp_d

HCL_LinCombLinearOp_d is a concrete class implementing a linear combination of one or more linear operators

Inheritance:

Public Methods

virtual HCL_VectorSpace_d& Domain ()
Domain space access
HCL_LinCombLinearOp_d ( HCL_LinearOp_d * op1, double a1, HCL_LinearOp_d * op2, double a2 )
Provided for convenience
HCL_LinCombLinearOp_d ( HCL_VectorSpace_d * d, HCL_VectorSpace_d * r, int n )
Usual constructor
virtual void Image ( const HCL_Vector_d & x, HCL_Vector_d & y )
Image computes the action of the operator on x, giving y.
Table& Parameters ()
Access to parameter table
virtual HCL_VectorSpace_d& Range ()
Range space access
void SetNext ( HCL_LinearOp_d * L, double a )
SetNext is used for initializing the terms in the linear combination
virtual ostream& Write ( ostream & str )
Debugging information

Inherited from HCL_LinearOp_d:

Inherited from HCL_Base:

Public Methods

int Count()
void DecCount()
void IncCount()

Private Fields

int ReferenceCount

Documentation

HCL_LinCombLinearOp_d is a concrete class implementing a linear combination of one or more linear operators. This class is useful for combining existing linear operators to create a new operator.

The primary methods are exactly the same as those of HCL_LinearOp_d. In addition, the Parameters method allows the weights in the linear combination to be accessed or changed.

HCL_LinCombLinearOp_d( HCL_VectorSpace_d * d, HCL_VectorSpace_d * r, int n )
Usual constructor. Requires that the domain and range space be given (for error checking), along with the number of terms in the sum. The operators and weights are added one-by-one using the SetNext method.

HCL_LinCombLinearOp_d( HCL_LinearOp_d * op1, double a1, HCL_LinearOp_d * op2, double a2 )
Provided for convenience. This constructor makes it easy to create a linear combination with two terms. Pointers to the two operators (Op1 and Op2) and their weights (a1 and a2) must be given.

virtual HCL_VectorSpace_d& Domain()
Domain space access. Returns a reference to the domain of the operator, which is a HCL_VectorSpace_d.

virtual HCL_VectorSpace_d& Range()
Range space access. Returns a reference to the range of the operator, which is a HCL_VectorSpace_d.

Table& Parameters()
Access to parameter table. The weights for the linear combination can be accessed with Parameters().GetArrayValue( "Weights",i,val ) or changed with Parameters().PutArrayValue( "Weights",i,val ).

virtual void Image( const HCL_Vector_d & x, HCL_Vector_d & y )
Image computes the action of the operator on x, giving y.

void SetNext( HCL_LinearOp_d * L, double a )
SetNext is used for initializing the terms in the linear combination. A pointer to the next operator (L) and its weight (a) must be given.

virtual ostream& Write( ostream & str )
Debugging information. Prints out the weights in the linear combination, and invokes the Write method for each linear operator.

This class has no child classes.

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