Two-particle vertex implementation for time reversal invariant models. More...

#include <TRIVertexTwoParticle.hpp>

Public Types
enum	FrequencyChannel { FrequencyChannel::S, FrequencyChannel::T, FrequencyChannel::U, FrequencyChannel::All, FrequencyChannel::None }
	Indicator for frequency channels that exactly lie on frequency mesh points. More...

Public Member Functions
	TRIVertexTwoParticle ()
	Construct a new TRIVertexTwoParticle object and initialize all entries to zero.

	~TRIVertexTwoParticle ()
	Destroy the TRIVertexTwoParticle object.

void	expandIterator (int iterator, LatticeIterator &i1, float &s, float &t, float &u, SpinComponent &s1, SpinComponent &s2) const
	Expand a linear iterator in the range [0,size) that iterates over all vertex entries. More...

void	expandIterator (int iterator, float &s, float &t, float &u) const
	Expand a linear iterator in the range [0,sizeFrequency) that iterates over all paramtetrized frequency values. More...

float &	getValueRef (const int iterator) const
	Directly access a vertex value via a linear iterator in the range [0,size). More...

float	getValue (LatticeIterator i1, LatticeIterator i2, float s, float t, float u, SpinComponent s1, SpinComponent s2, const FrequencyChannel channel) const
	Access vertex value at arbitrary lattice sites, frequencies, and spin components. More...

template<int n>
float	getValue (LatticeIterator i1, LatticeIterator i2, SpinComponent s1, SpinComponent s2, const TRIVertexTwoParticleAccessBuffer< n > &accessBuffer) const
	Access vertex value at arbitrary lattice sites and spin components via a given access buffer. More...

template<int n>
float	getValueLocal (SpinComponent s1, SpinComponent s2, const TRIVertexTwoParticleAccessBuffer< n > &accessBuffer) const
	Access vertex value locally at arbitrary spin components via a given access buffer. More...

template<int n>
void	getValueSuperbundle (const TRIVertexTwoParticleAccessBuffer< n > &accessBuffer, ValueSuperbundle< float, 16 > &superbundle) const
	Bundled vertex access on all lattice sites and spin components simultaneously via a given access buffer. More...

TRIVertexTwoParticleAccessBuffer< 4 >	generateAccessBuffer (float s, float t, float u, const FrequencyChannel channel) const
	Generate an access buffer for a set of frequencies where one of them (specified by channel) exactly lies on the frequency mesh. More...

TRIVertexTwoParticleAccessBuffer< 8 >	generateAccessBuffer (float s, float t, float u) const
	Generate an access buffer for an arbitrary set of frequencies. More...

float	_directAccessMapFrequencyExchange (const int siteOffset, const int sOffset, const int tOffset, const int uOffset, const SpinComponent s1, const SpinComponent s2) const
	Directly access a vertex via given spin components, frequency, and site offsets, where sOffset may be lesser than uOffset. More...

float	_directAccess (const int siteOffset, const int sOffset, const int tOffset, const int uOffset, const SpinComponent s1, const SpinComponent s2) const
	Directly access a vertex via given spin components, frequency, and site offsets, where sOffset >= uOffset. More...

template<int n>
void	_generateAccessBufferOffsetMapFrequencyExchange (const int sOffset, const int tOffset, const int uOffset, const int abIndex, TRIVertexTwoParticleAccessBuffer< n > &ab) const
	Calculate the total memory offset from given frequency offsets, where sOffset may be lesser than uOffset. Write the result to the specified entry in an access buffer. More...

float	_zeta (const int s1) const
	Helper function for vertex symmetries. Returns -1 if the argument is spin-like and +1 if it is density-like. More...

Public Attributes
int	size
	Size of the vertex (number of elements).

int	sizeFrequency
	Size of the vertex in the frequency subspace (number of elements).

float *	_data
	Vertex data.

int	_memoryStep [4]
	Memory stride width.

Detailed Description

Two-particle vertex implementation for time reversal invariant models.

Member Enumeration Documentation

◆ FrequencyChannel

enum TRIVertexTwoParticle::FrequencyChannel

strong

Indicator for frequency channels that exactly lie on frequency mesh points.

Enumerator
S	s-channel.
T	t-channel.
U	u-channel.
All	All channels.
None	No channel.

Member Function Documentation

◆ _directAccess()

float TRIVertexTwoParticle::_directAccess	(	const int	siteOffset,
		const int	sOffset,
		const int	tOffset,
		const int	uOffset,
		const SpinComponent	s1,
		const SpinComponent	s2
	)		const

inline

Directly access a vertex via given spin components, frequency, and site offsets, where sOffset >= uOffset.

Parameters

siteOffset	Lattice site offset (number of elements).
sOffset	First frequency offset (number of elements).
tOffset	Second frequency offset (number of elements).
uOffset	Third frequency offset (number of elements).
s1	First vertex channel.
s2	Second vertex channel.

Returns: float Vertex value.

◆ _directAccessMapFrequencyExchange()

float TRIVertexTwoParticle::_directAccessMapFrequencyExchange	(	const int	siteOffset,
		const int	sOffset,
		const int	tOffset,
		const int	uOffset,
		const SpinComponent	s1,
		const SpinComponent	s2
	)		const

inline

Directly access a vertex via given spin components, frequency, and site offsets, where sOffset may be lesser than uOffset.

Parameters

siteOffset	Lattice site offset (number of elements).
sOffset	First frequency offset (number of elements).
tOffset	Second frequency offset (number of elements).
uOffset	Third frequency offset (number of elements).
s1	First vertex channel.
s2	Second vertex channel.

Returns: float Vertex value.

◆ _generateAccessBufferOffsetMapFrequencyExchange()

template<int n>

void TRIVertexTwoParticle::_generateAccessBufferOffsetMapFrequencyExchange	(	const int	sOffset,
		const int	tOffset,
		const int	uOffset,
		const int	abIndex,
		TRIVertexTwoParticleAccessBuffer< n > &	ab
	)		const

inline

Calculate the total memory offset from given frequency offsets, where sOffset may be lesser than uOffset. Write the result to the specified entry in an access buffer.

Template Parameters

n	Number of support sites in the access buffer.

Parameters

[in]	sOffset	First frequency offset (number of elements).
[in]	tOffset	Second frequency offset (number of elements).
[in]	uOffset	Third frequency offset (number of elements).
[in]	abIndex	Index of the access buffer entry to write.
	ab	Access buffer.

◆ _zeta()

float TRIVertexTwoParticle::_zeta ( const int s1 ) const

inline

Helper function for vertex symmetries. Returns -1 if the argument is spin-like and +1 if it is density-like.

Parameters

s1	Spin argument.

Returns: float Function value.

◆ expandIterator() [1/2]

void TRIVertexTwoParticle::expandIterator	(	int	iterator,
		float &	s,
		float &	t,
		float &	u
	)		const

inline

Expand a linear iterator in the range [0,sizeFrequency) that iterates over all paramtetrized frequency values.

Parameters

[in]	iterator	Linear iterator.
[out]	s	First frequency argument.
[out]	t	Second frequency argument.
[out]	u	Third frequency argument.

◆ expandIterator() [2/2]

void TRIVertexTwoParticle::expandIterator	(	int	iterator,
		LatticeIterator &	i1,
		float &	s,
		float &	t,
		float &	u,
		SpinComponent &	s1,
		SpinComponent &	s2
	)		const

inline

Expand a linear iterator in the range [0,size) that iterates over all vertex entries.

Parameters

[in]	iterator	Linear iterator.
[out]	i1	Lattice site iterator.
[out]	s	First frequency argument.
[out]	t	Second frequency argument.
[out]	u	Third frequency argument.
[out]	s1	First vertex channel.
[out]	s2	Second vertex channel.

◆ generateAccessBuffer() [1/2]

TRIVertexTwoParticleAccessBuffer<8> TRIVertexTwoParticle::generateAccessBuffer	(	float	s,
		float	t,
		float	u
	)		const

inline

Generate an access buffer for an arbitrary set of frequencies.

Parameters

s	First frequency argument.
t	Second frequency argument.
u	Third frequency argument.

Returns: TRIVertexTwoParticleAccessBuffer<8> Access buffer.

◆ generateAccessBuffer() [2/2]

TRIVertexTwoParticleAccessBuffer<4> TRIVertexTwoParticle::generateAccessBuffer	(	float	s,
		float	t,
		float	u,
		const FrequencyChannel	channel
	)		const

inline

Generate an access buffer for a set of frequencies where one of them (specified by channel) exactly lies on the frequency mesh.

Parameters

s	First frequency argument.
t	Second frequency argument.
u	Third frequency argument.
channel	Frequency channel.

Returns: TRIVertexTwoParticleAccessBuffer<4> Access buffer.

◆ getValue() [1/2]

float TRIVertexTwoParticle::getValue	(	LatticeIterator	i1,
		LatticeIterator	i2,
		float	s,
		float	t,
		float	u,
		SpinComponent	s1,
		SpinComponent	s2,
		const FrequencyChannel	channel
	)		const

inline

Access vertex value at arbitrary lattice sites, frequencies, and spin components.

Parameters

i1	First lattice site argument.
i2	Second lattice site argument.
s	First frequency argument.
t	Second frequency argument.
u	Third frequency argument.
s1	First vertex channel.
s2	Second vertex channel.
channel	Frequency channel.

Returns: float Vertex value.

◆ getValue() [2/2]

template<int n>

float TRIVertexTwoParticle::getValue	(	LatticeIterator	i1,
		LatticeIterator	i2,
		SpinComponent	s1,
		SpinComponent	s2,
		const TRIVertexTwoParticleAccessBuffer< n > &	accessBuffer
	)		const

inline

Access vertex value at arbitrary lattice sites and spin components via a given access buffer.

Template Parameters

n	Number of support sites in the access buffer.

Parameters

i1	First lattice site argument.
i2	Second lattice site argument.
s1	First vertex channel.
s2	Second vertex channel.
accessBuffer	Access buffer.

Returns: float Vertex value.

◆ getValueLocal()

template<int n>

float TRIVertexTwoParticle::getValueLocal	(	SpinComponent	s1,
		SpinComponent	s2,
		const TRIVertexTwoParticleAccessBuffer< n > &	accessBuffer
	)		const

inline

Access vertex value locally at arbitrary spin components via a given access buffer.

Template Parameters

n	Number of support sites in the access buffer.

Parameters

s1	First vertex channel.
s2	Second vertex channel.
accessBuffer	Access buffer.

Returns: float Vertex value.

◆ getValueRef()

float& TRIVertexTwoParticle::getValueRef ( const int iterator ) const

inline

Directly access a vertex value via a linear iterator in the range [0,size).

Parameters

iterator Linear iterator.

Returns: float& Vertex value.

◆ getValueSuperbundle()

template<int n>

void TRIVertexTwoParticle::getValueSuperbundle	(	const TRIVertexTwoParticleAccessBuffer< n > &	accessBuffer,
		ValueSuperbundle< float, 16 > &	superbundle
	)		const

inline

Bundled vertex access on all lattice sites and spin components simultaneously via a given access buffer.

Template Parameters

n	Number of support sites in the access buffer.

Parameters

[in]	accessBuffer	Access buffer.
[out]	superbundle	Vertex value bundle.

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

/home/runner/work/SpinParser/SpinParser/src/TRI/TRIVertexTwoParticle.hpp

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

◆ FrequencyChannel

Member Function Documentation

◆ _directAccess()

◆ _directAccessMapFrequencyExchange()

◆ _generateAccessBufferOffsetMapFrequencyExchange()

◆ _zeta()

◆ expandIterator() [1/2]

◆ expandIterator() [2/2]

◆ generateAccessBuffer() [1/2]

◆ generateAccessBuffer() [2/2]

◆ getValue() [1/2]

◆ getValue() [2/2]

◆ getValueLocal()

◆ getValueRef()

◆ getValueSuperbundle()