HPCombi::TPUBuild< TPU > Struct Template Reference

Given a transformation from 0..15 → 0..15, build at compile-time the array representing the transformation. More...

#include <builder.hpp>

Public Types
using	type_elem = typename std::remove_reference_t<decltype((TPU{})[0])>
	Type of the elements.
using	array = std::array<type_elem, size>
	Array equivalent type.

Public Member Functions
constexpr TPU	operator() (std::initializer_list< type_elem > il, type_elem def) const
	Construct a TPU from an std::initializer_list and a default value.
template<class Fun>
constexpr TPU	operator() (Fun f) const
	Construct a TPU from a function giving the values at \(1,2,\dots\).
constexpr TPU	operator() (type_elem c) const
	Construct a constant TPU.
constexpr TPU	operator() (int c) const
	explicit overloading for int constants
constexpr TPU	operator() (size_t c) const
	explicit overloading for size_t constants
constexpr TPU	operator() (array a) const
	explicit overloading for array
constexpr TPU	id () const
	Return the identity element of type TPU.
constexpr TPU	rev () const
	Return the reversed element of type TPU.
constexpr TPU	left_cycle () const
	Left cycle TPU permutation.
constexpr TPU	right_cycle () const
	Right cycle TPU permutation.
constexpr TPU	left_dup () const
	Left shift TPU, duplicating the rightmost entry.
constexpr TPU	right_dup () const
	Right shift TPU, duplicating the leftmost entry.
constexpr TPU	popcount () const
	Popcount TPU: the ith entry contains the number of bits set in i.

Static Public Member Functions
template<class Fun, decltype(size)... Is>
static constexpr TPU	make_helper (Fun f, std::index_sequence< Is... >)

Static Public Attributes
static constexpr size_t	size_elem = sizeof(type_elem)
	Size of the elements.
static constexpr size_t	size = sizeof(TPU) / size_elem
	Number of elements.

Detailed Description

template<class TPU>
struct HPCombi::TPUBuild< TPU >

Given a transformation from 0..15 → 0..15, build at compile-time the array representing the transformation.

Class for factory object associated to a SIMD packed unsigned integers. The main purpose of this class is to be able to construct in a constexpr way various instances of the TPU SIMD vector type. The behavior of an instance of TPUBuild<TPU> is designed to mimic the behavior of TPU if it where a class:

• calling operator() on an instance which acts similarly to a class constructor,
• calling a member function such as id acts as a static member function.

Member Typedef Documentation

array

template<class TPU>

using HPCombi::TPUBuild< TPU >::array = std::array<type_elem, size>

Array equivalent type.

type_elem

template<class TPU>

using HPCombi::TPUBuild< TPU >::type_elem = typename std::remove_reference_t<decltype((TPU{})[0])>

Type of the elements.

Member Function Documentation

id()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::id ( ) const

inlineconstexpr

Return the identity element of type TPU.

left_cycle()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::left_cycle ( ) const

inlineconstexpr

Left cycle TPU permutation.

left_dup()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::left_dup ( ) const

inlineconstexpr

Left shift TPU, duplicating the rightmost entry.

make_helper()

template<class TPU>

template<class Fun, decltype(size)... Is>

static constexpr TPU HPCombi::TPUBuild< TPU >::make_helper ( Fun f, std::index_sequence< Is... >  )

inlinestaticconstexpr

operator()() [1/6]

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::operator() ( array a ) const

inlineconstexpr

explicit overloading for array

operator()() [2/6]

template<class TPU>

template<class Fun>

TPU HPCombi::TPUBuild< TPU >::operator() ( Fun f ) const

inlineconstexpr

Construct a TPU from a function giving the values at \(1,2,\dots\).

operator()() [3/6]

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::operator() ( int c ) const

inlineconstexpr

explicit overloading for int constants

operator()() [4/6]

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::operator() ( size_t c ) const

inlineconstexpr

explicit overloading for size_t constants

operator()() [5/6]

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::operator() ( std::initializer_list< type_elem > il, type_elem def ) const

inlineconstexpr

Construct a TPU from an std::initializer_list and a default value.

operator()() [6/6]

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::operator() ( type_elem c ) const

inlineconstexpr

Construct a constant TPU.

popcount()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::popcount ( ) const

inlineconstexpr

Popcount TPU: the ith entry contains the number of bits set in i.

rev()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::rev ( ) const

inlineconstexpr

Return the reversed element of type TPU.

right_cycle()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::right_cycle ( ) const

inlineconstexpr

Right cycle TPU permutation.

right_dup()

template<class TPU>

TPU HPCombi::TPUBuild< TPU >::right_dup ( ) const

inlineconstexpr

Right shift TPU, duplicating the leftmost entry.

Member Data Documentation

size

template<class TPU>

size_t HPCombi::TPUBuild< TPU >::size = sizeof(TPU) / size_elem

staticconstexpr

Number of elements.

size_elem

template<class TPU>

size_t HPCombi::TPUBuild< TPU >::size_elem = sizeof(type_elem)

staticconstexpr

Size of the elements.

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

• /Users/jdm/hpcombi/include/hpcombi/builder.hpp