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 More...
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 (std::vector< BasePtr > ops)
	Constructor taking a vector of Linear Operators.
	gsProductOp (BasePtr op0, BasePtr op1)
	Constructor taking two Linear Operators.
	gsProductOp (BasePtr op0, BasePtr op1, BasePtr op2)
	Constructor taking three 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 (std::vector< BasePtr > ops)
	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.

Member Function Documentation

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 >.