represents a gradient operator More...

#include <flexGradientOperator.h>

Inheritance diagram for flexGradientOperator< T >:

Public Member Functions
	flexGradientOperator (std::vector< int > AInputDimension, int aGradDirection, gradientType aType, bool aMinus)
	initializes the gradient operator More...

flexGradientOperator< T > *	copy ()
	copies the linear operator More...

void	updateValue (T *ptr, mySign s, T value)

void	dxp3d (const Tdata &input, Tdata &output, mySign s)

void	dyp3d (const Tdata &input, Tdata &output, mySign s)

void	dzp3d (const Tdata &input, Tdata &output, mySign s)

void	dxp3dTransposed (const Tdata &input, Tdata &output, mySign s)

void	dyp3dTransposed (const Tdata &input, Tdata &output, mySign s)

void	dzp3dTransposed (const Tdata &input, Tdata &output, mySign s)

void	dxp2d (const Tdata &input, Tdata &output, mySign s)

void	dyp2d (const Tdata &input, Tdata &output, mySign s)

void	dxp2dTransposed (const Tdata &input, Tdata &output, mySign s)

void	dyp2dTransposed (const Tdata &input, Tdata &output, mySign s)

void	doTimesCPU (bool transposed, const Tdata &input, Tdata &output, mySign s)

void	doTimesCUDA (bool transposed, const Tdata &input, Tdata &output, mySign s)

void	doTimes (bool transposed, const Tdata &input, Tdata &output, mySign s)

void	timesPlus (bool transposed, const Tdata &input, Tdata &output)
	applies linear operator on vector and adds its result to y More...

void	timesMinus (bool transposed, const Tdata &input, Tdata &output)
	applies linear operator on vector and substracts its result from y More...

void	times (bool transposed, const Tdata &input, Tdata &output)
	applies linear operator on vector More...

T	getMaxRowSumAbs (bool transposed)
	returns the maximum sum of absolute values per row used for preconditioning More...

std::vector< T >	getAbsRowSum (bool transposed)
	returns a vector of sum of absolute values per row used for preconditioning More...

int	index3DtoLinear (int i, int j, int k)

int	index2DtoLinear (int i, int j)

thrust::device_vector< T >	getAbsRowSumCUDA (bool transposed)
	same function as getAbsRowSum() but implemented in CUDA More...

Public Member Functions inherited from flexLinearOperator< T >
	flexLinearOperator (int aNumRows, int aNumCols, linOp aType, bool aIsMinus)
	initializes the linear operator More...

int	getNumCols () const
	returns number of columns of the linear operator More...

int	getNumRows () const
	returns number of rows of the linear operator More...

void	setNumCols (int aNumCols)
	sets the number of columns of the linear operator More...

void	setNumRows (int aNumRows)
	sets the number of rows of the linear operator More...

void	setMinus (bool aIsMinus)
	constrols if operator should be negated or not More...

Additional Inherited Members
Public Attributes inherited from flexLinearOperator< T >
linOp	type
	type of linear operator More...

bool	isMinus
	determines if operator is negated

Detailed Description

template<typename T>
class flexGradientOperator< T >

represents a gradient operator

Constructor & Destructor Documentation

◆ flexGradientOperator()

template<typename T >

flexGradientOperator< T >::flexGradientOperator	(	std::vector< int >	AInputDimension,
		int	aGradDirection,
		gradientType	aType,
		bool	aMinus
	)

inline

initializes the gradient operator

Parameters

AInputDimension	vector of dimensions
aGradDirection	direction of gradient. 0 for first dimension and so on.
aType	type of gradient. Possible values are forward, backward and central.
aMinus	determines if operator is negated

See also: isMinus

Member Function Documentation

◆ copy()

template<typename T >

flexGradientOperator<T>* flexGradientOperator< T >::copy ( )

inlinevirtual

copies the linear operator

Returns: copy of linear operator

Implements flexLinearOperator< T >.

◆ getAbsRowSum()

template<typename T >

std::vector<T> flexGradientOperator< T >::getAbsRowSum ( bool transposed )

inlinevirtual

returns a vector of sum of absolute values per row used for preconditioning

Parameters

transposed is true if operator should be (temporarily) transposed before usage

Returns: vector of sum of absolute values per row

Implements flexLinearOperator< T >.

◆ getAbsRowSumCUDA()

template<typename T >

thrust::device_vector<T> flexGradientOperator< T >::getAbsRowSumCUDA ( bool transposed )

inlinevirtual

same function as getAbsRowSum() but implemented in CUDA

Parameters

transposed is true if operator should be (temporarily) transposed before usage

Returns: vector of sum of absolute values per row

Implements flexLinearOperator< T >.

◆ getMaxRowSumAbs()

template<typename T >

T flexGradientOperator< T >::getMaxRowSumAbs ( bool transposed )

inlinevirtual

returns the maximum sum of absolute values per row used for preconditioning

Parameters

transposed is true if operator should be (temporarily) transposed before usage

Returns: maximum sum of absolute values per row

Implements flexLinearOperator< T >.

◆ times()

template<typename T >

void flexGradientOperator< T >::times	(	bool	transposed,
		const Tdata &	input,
		Tdata &	output
	)

inlinevirtual

applies linear operator on vector

equals $ y = Ax $

Parameters

transposed	is true if operator should be (temporarily) transposed before usage
input	data to be processed
output	output data

Implements flexLinearOperator< T >.

◆ timesMinus()

template<typename T >

void flexGradientOperator< T >::timesMinus	(	bool	transposed,
		const Tdata &	input,
		Tdata &	output
	)

inlinevirtual

applies linear operator on vector and substracts its result from y

equals $ y = y - Ax $

Parameters

transposed	is true if operator should be (temporarily) transposed before usage
input	data to be processed
output	output data

Implements flexLinearOperator< T >.

◆ timesPlus()

template<typename T >

void flexGradientOperator< T >::timesPlus	(	bool	transposed,
		const Tdata &	input,
		Tdata &	output
	)

inlinevirtual

applies linear operator on vector and adds its result to y

equals $ y = y + Ax $

Parameters

transposed	is true if operator should be (temporarily) transposed before usage
input	data to be processed
output	output data

Implements flexLinearOperator< T >.

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

flexGradientOperator.h

Public Member Functions

Additional Inherited Members

Detailed Description

template<typename T> class flexGradientOperator< T >

Constructor & Destructor Documentation

◆ flexGradientOperator()

Member Function Documentation

◆ copy()

◆ getAbsRowSum()

◆ getAbsRowSumCUDA()

◆ getMaxRowSumAbs()

◆ times()

◆ timesMinus()

◆ timesPlus()

template<typename T>
class flexGradientOperator< T >