gsProductOp< T > Class Template Reference

Detailed Description

template<typename T>
class gismo::gsProductOp< T >

Class for representing the product of objects of type gsLinearOperator as gsLinearOperator.

For given operators \( A_1, A_2, ..., A_N\), it implements \( A_N, ..., A_1\), so \( A_1 \) is applied first, and \( A_N \) applied last. The operator has dimensions A_N.rows() x A_1.cols().

For composition of preconditioners, cf. also gsCompositePrecOp

Inheritance diagram for gsProductOp< T >:

Collaboration diagram for gsProductOp< T >:

Public Types
typedef memory::shared_ptr< gsProductOp >	Ptr
	Shared pointer for gsProductOp.
typedef memory::unique_ptr< gsProductOp >	uPtr
	Unique pointer for gsProductOp.

Public Member Functions
void	addOperator (BasePtr op)
	Add another operator at the end.
void	apply (const gsMatrix< T > &input, gsMatrix< T > &x) const
	apply the operator on the input vector and store the result in x
index_t	cols () const
	Returns the number of columns of the operator.
const std::vector< BasePtr > &	getOps () const
	Return a vector of shared pointers to all operators.
	gsProductOp ()
	Empty constructor. To be filled with addOperator()
	gsProductOp (BasePtr op0, BasePtr op1)
	Constructor taking two Linear Operators.
	gsProductOp (BasePtr op0, BasePtr op1, BasePtr op2)
	Constructor taking three Linear Operators.
	gsProductOp (std::vector< BasePtr > ops)
	Constructor taking a vector of Linear Operators.
index_t	rows () const
	Returns the number of rows of the operator.
virtual void	setOptions (const gsOptionList &)
	Set options based on a gsOptionList object.

Static Public Member Functions
static gsOptionList	defaultOptions ()
	Get the default options as gsOptionList object.
static gsIdentityOp< T >	Identity (const index_t dim)
	Identity operator.
static uPtr	make ()
	Make command returning a smart pointer.
static uPtr	make (BasePtr op0, BasePtr op1)
	Make command returning a smart pointer.
static uPtr	make (BasePtr op0, BasePtr op1, BasePtr op2)
	Make command returning a smart pointer.
static uPtr	make (std::vector< BasePtr > ops)
	Make command returning a smart pointer.

Member Function Documentation

apply()

template<typename T >

void apply ( const gsMatrix< T > &  input, gsMatrix< T > &  x  ) const

inlinevirtual

apply the operator on the input vector and store the result in x

Parameters

input	Input vector
x	result vector

Implements gsLinearOperator< T >.