fastmm::Xoshiro256ss Class Reference

#include <fastmm/core/rng.hpp>

Public Types
using	result_type = std::uint64_t
	std::uniform_random_bit_generator interface

Public Member Functions
constexpr	Xoshiro256ss (std::uint64_t seed=0x9E3779B97F4A7C15ULL) noexcept
constexpr void	reseed (std::uint64_t seed) noexcept
constexpr std::uint64_t	next () noexcept
constexpr std::uint64_t	operator() () noexcept
constexpr std::uint64_t	uniform (std::uint64_t n) noexcept
	Unbiased integer in [0, n) (Lemire's multiply-shift with rejection).
constexpr std::int64_t	between (std::int64_t lo, std::int64_t hi) noexcept
	Integer in [lo, hi] inclusive.
double	uniform01 () noexcept
	Double in [0, 1). Sim/backtest only (hot path is integer).

Static Public Member Functions
static constexpr result_type	min () noexcept
static constexpr result_type	max () noexcept

Member Typedef Documentation

result_type

using fastmm::Xoshiro256ss::result_type = std::uint64_t

std::uniform_random_bit_generator interface

Constructor & Destructor Documentation

Xoshiro256ss()

constexpr fastmm::Xoshiro256ss::Xoshiro256ss ( std::uint64_t  seed = 0x9E3779B97F4A7C15ULL )

inlineexplicitconstexprnoexcept

Member Function Documentation

reseed()

constexpr void fastmm::Xoshiro256ss::reseed ( std::uint64_t  seed )

inlineconstexprnoexcept

splitmix64 expands the seed so that seed 0 does not produce the all-zero state.

next()

constexpr std::uint64_t fastmm::Xoshiro256ss::next ( )

inlineconstexprnoexcept

operator()()

constexpr std::uint64_t fastmm::Xoshiro256ss::operator() ( )

inlineconstexprnoexcept

uniform()

constexpr std::uint64_t fastmm::Xoshiro256ss::uniform ( std::uint64_t  n )

inlineconstexprnoexcept

Unbiased integer in [0, n) (Lemire's multiply-shift with rejection).

between()

constexpr std::int64_t fastmm::Xoshiro256ss::between ( std::int64_t  lo, std::int64_t  hi  )

inlineconstexprnoexcept

Integer in [lo, hi] inclusive.

uniform01()

double fastmm::Xoshiro256ss::uniform01 ( )

inlinenoexcept

Double in [0, 1). Sim/backtest only (hot path is integer).

min()

static constexpr result_type fastmm::Xoshiro256ss::min ( )

inlinestaticconstexprnoexcept

max()

static constexpr result_type fastmm::Xoshiro256ss::max ( )

inlinestaticconstexprnoexcept