Detailed Description

template<std::ptrdiff_t... I>
struct eve::pattern_t< I >

Shuffling pattern.

Holds the index describing a compile-time shuffling pattern.

Template Parameters

I	Index of the shuffling pattern

Public Member Functions
constexpr std::ptrdiff_t	operator() (std::ptrdiff_t i, int) const noexcept
	Returns the index to use for accessing the ith element of a shuffled eve::wide.
constexpr bool	strictly_over (std::ptrdiff_t n) const noexcept
	Checks if all non zeroing-indexes in a pattern are greater than a given index.
constexpr bool	strictly_under (std::ptrdiff_t n) const noexcept
	Checks if all non zeroing-indexes in a pattern are lesser than a given index.
constexpr bool	over (std::ptrdiff_t n) const noexcept
	Checks if all non zeroing-indexes in a pattern are strictly greater or equal than a given index.
constexpr bool	under (std::ptrdiff_t n) const noexcept
	Checks if all non zeroing-indexes in a pattern are strictly lesser or equal than a given index.
template<std::ptrdiff_t... J>
constexpr bool	operator== (pattern_t< J... >) const noexcept
	Checks equality with another pattern.
template<std::ptrdiff_t... J>
constexpr bool	operator!= (pattern_t< J... >) const noexcept
	Checks inequality with another pattern.

Static Public Member Functions
static constexpr std::ptrdiff_t	size () noexcept
	Size of the pattern in number of indices.
static constexpr bool	has_zeros () noexcept
	Checks if a pattern contains any zeroing index.
static constexpr bool	validate (std::ptrdiff_t N) noexcept
	Ensure that a pattern don't try to reference non-existent lanes.

Friends
template<typename Ch, typename Ct>
auto &	operator<< (std::basic_ostream< Ch, Ct > &os, pattern_t const &)
	Stream insertion operator for shuffling pattern.

Related Symbols
(Note that these are not member symbols.)
template<std::ptrdiff_t Sz, pattern_formula F>
constexpr auto	fix_pattern (F)
	Converts a formula pattern to an index pattern.
template<std::ptrdiff_t N, shuffle_pattern Pattern>
constexpr auto	pattern_clamp (Pattern const &) noexcept
	Clamps a pattern to a given size.
template<std::ptrdiff_t B, std::ptrdiff_t E, std::ptrdiff_t N, shuffle_pattern Pattern>
constexpr auto	pattern_view (Pattern const &) noexcept
	Extracts a sub-pattern from an existing pattern.
template<std::ptrdiff_t O, std::ptrdiff_t N, shuffle_pattern Pattern>
constexpr auto	slide_pattern (Pattern) noexcept

◆ pattern_view()

template<std::ptrdiff_t B, std::ptrdiff_t E, std::ptrdiff_t N, shuffle_pattern Pattern>

auto pattern_view ( Pattern const & )

Extracts a sub-pattern from an existing pattern.

Constructs a pattern by extracting all index from a pattern of size N between B and E.

Template Parameters

B	Position of first index to extract
E	Position of last index to extract
N	Size of the pattern to extract from

template<std::ptrdiff_t O, std::ptrdiff_t N, shuffle_pattern Pattern>

auto slide_pattern ( Pattern )

Slide the values of an existing pattern

	E.V.E v2023.02.15