CECCO::details::Lut2D< LabelType, FieldSize > Struct Template Reference

2D lookup table for commutative binary operations, optionally compressed More...

#include <fields.hpp>

Inheritance diagram for CECCO::details::Lut2D< LabelType, FieldSize >:

Public Member Functions
constexpr LabelType &	operator() (size_t i, size_t j)
	Mutable access (used during table construction).
constexpr LabelType	operator() (size_t i, size_t j) const noexcept
	Const access (used during field operations).

Public Attributes
std::array< std::array< LabelType, FieldSize >,(FieldSize< CECCO_COMPRESS_LUTS_FROM_Q ? FieldSize :FieldSize/2+1)>	values {}
	Backing storage; full square below the compression threshold, upper triangle above.

Detailed Description

template<typename LabelType, size_t FieldSize>
struct CECCO::details::Lut2D< LabelType, FieldSize >

2D lookup table for commutative binary operations, optionally compressed

Template Parameters

LabelType	Label integer type
FieldSize	Number of field elements

For FieldSize ≥ CECCO_COMPRESS_LUTS_FROM_Q, only the upper triangle is stored (saving ~50 % memory); the access operators normalise the index pair so callers don't see the difference.

Definition at line 838 of file fields.hpp.

Member Function Documentation

operator()() [1/2]

template<typename LabelType, size_t FieldSize>

LabelType & CECCO::details::Lut2D< LabelType, FieldSize >::operator() ( size_t i, size_t j )

inlineconstexpr

Mutable access (used during table construction).

Definition at line 840 of file fields.hpp.

operator()() [2/2]

template<typename LabelType, size_t FieldSize>

LabelType CECCO::details::Lut2D< LabelType, FieldSize >::operator() ( size_t i, size_t j ) const

inlineconstexprnoexcept

Const access (used during field operations).

Definition at line 854 of file fields.hpp.

Member Data Documentation

values

template<typename LabelType, size_t FieldSize>

std::array<std::array<LabelType, FieldSize>, (FieldSize < CECCO_COMPRESS_LUTS_FROM_Q ? FieldSize : FieldSize / 2 + 1)> CECCO::details::Lut2D< LabelType, FieldSize >::values {}

Backing storage; full square below the compression threshold, upper triangle above.

Definition at line 870 of file fields.hpp.

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

• fields.hpp