randlib::Xoshiro256pp Class Reference

The Xoshiro256pp class
xoshiro256++ 1.0 by David Blackman and Sebastiano Vigna: 256 bits of state, period 2^256 - 1. More...

#include <xoshiro.hpp>

Public Types
using	result_type = std::uint64_t

Public Member Functions
constexpr	Xoshiro256pp (std::uint64_t value=default_seed) noexcept
template<class SeedSeq > requires (!std::convertible_to<SeedSeq &, std::uint64_t>)
	Xoshiro256pp (SeedSeq &sequence)
constexpr void	seed (std::uint64_t value) noexcept
	Expands the seed with SplitMix64, as recommended by the authors.
template<class SeedSeq > requires (!std::convertible_to<SeedSeq &, std::uint64_t>)
void	seed (SeedSeq &sequence)
constexpr result_type	operator() () noexcept
constexpr void	discard (unsigned long long n) noexcept
constexpr void	jump () noexcept
	Advances the state by 2^128 steps.
constexpr void	long_jump () noexcept
	Advances the state by 2^192 steps.

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

Static Public Attributes
static constexpr std::uint64_t	default_seed = 0x853C49E6748FEA9BULL

Friends
constexpr bool	operator== (const Xoshiro256pp &, const Xoshiro256pp &)=default

Detailed Description

The Xoshiro256pp class
xoshiro256++ 1.0 by David Blackman and Sebastiano Vigna: 256 bits of state, period 2^256 - 1.

jump() advances the state by 2^128 steps and long_jump() by 2^192 steps, which gives non-overlapping streams for parallel simulations (see make_streams).

Member Typedef Documentation

result_type

using randlib::Xoshiro256pp::result_type = std::uint64_t

Constructor & Destructor Documentation

Xoshiro256pp() [1/2]

constexpr randlib::Xoshiro256pp::Xoshiro256pp ( std::uint64_t  value = default_seed )

inlineexplicitconstexprnoexcept

Xoshiro256pp() [2/2]

template<class SeedSeq >
requires (!std::convertible_to<SeedSeq &, std::uint64_t>)

randlib::Xoshiro256pp::Xoshiro256pp ( SeedSeq &  sequence )

inlineexplicit

Member Function Documentation

discard()

constexpr void randlib::Xoshiro256pp::discard ( unsigned long long  n )

inlineconstexprnoexcept

jump()

constexpr void randlib::Xoshiro256pp::jump ( )

inlineconstexprnoexcept

Advances the state by 2^128 steps.

long_jump()

constexpr void randlib::Xoshiro256pp::long_jump ( )

inlineconstexprnoexcept

Advances the state by 2^192 steps.

max()

static constexpr result_type randlib::Xoshiro256pp::max ( )

inlinestaticconstexprnoexcept

min()

static constexpr result_type randlib::Xoshiro256pp::min ( )

inlinestaticconstexprnoexcept

operator()()

constexpr result_type randlib::Xoshiro256pp::operator() ( )

inlineconstexprnoexcept

seed() [1/2]

template<class SeedSeq >
requires (!std::convertible_to<SeedSeq &, std::uint64_t>)

void randlib::Xoshiro256pp::seed ( SeedSeq &  sequence )

inline

seed() [2/2]

constexpr void randlib::Xoshiro256pp::seed ( std::uint64_t  value )

inlineconstexprnoexcept

Expands the seed with SplitMix64, as recommended by the authors.

Friends And Related Symbol Documentation

operator==

constexpr bool operator== ( const Xoshiro256pp &  , const Xoshiro256pp &    )

friend

Member Data Documentation

default_seed

constexpr std::uint64_t randlib::Xoshiro256pp::default_seed = 0x853C49E6748FEA9BULL

staticconstexpr

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

• xoshiro.hpp