index_type

Detailed Description

Integral type an algorithm counts indices in.

Variables
template<std::unsigned_integral T>
constexpr auto	eve::algo::index_type = (index_type_key = std::type_identity<T>{})

Variable Documentation

index_type

template<std::unsigned_integral T>

auto eve::algo::index_type = (index_type_key = std::type_identity<T>{})

inlineconstexpr

Header file #include <eve/module/algo.hpp>

namespace eve::algo
{
  template<std::unsigned_integral T> inline constexpr auto index_type = eve_implementation_defined;
}

Template Parameters

T	Unsigned integral type holding an index.

Sets the unsigned integral type indices are counted in. By default the type is the smallest one that covers the widest element the algorithm reads, and is never narrower than std::uint16_t, so that the index of a range of bytes is not reset every 255 elements.

std::vector<std::int8_t> samples(100'000);
 
// The index runs in 32 bits: the loop flushes it every four billion elements instead of
// every 65535, in exchange for wider index registers.
auto lowest = min_element[index_type<std::uint32_t>](samples);

See also

Algorithm Traits