ApproxMVBB::RandomGenerators::XorShift128Plus Class Reference

#include <RandomGenerators.hpp>

Public Types
using	result_type = uint64_t

Public Member Functions
void	jump ()
uint64_t	operator() ()
void	seed (uint64_t seed)
	XorShift128Plus (const XorShift128Plus &gen)=default
	XorShift128Plus (XorShift128Plus &&gen)=default
	XorShift128Plus (uint64_t seed)
	XorShift128Plus ()

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

Private Attributes
uint64_t	s [2]

Detailed Description

This is the fastest generator passing BigCrush without systematic failures, but due to the relatively short period it is acceptable only for applications with a mild amount of parallelism; otherwise, use a xorshift1024* generator.

The state must be seeded so that it is not everywhere zero. If you have a 64-bit seed, we suggest to seed a splitmix64 generator and use its output to fill s.

Definition at line 62 of file RandomGenerators.hpp.

Member Typedef Documentation

using ApproxMVBB::RandomGenerators::XorShift128Plus::result_type = uint64_t

Definition at line 84 of file RandomGenerators.hpp.

Constructor & Destructor Documentation

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus ( const XorShift128Plus &  gen )

default

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus ( XorShift128Plus &&  gen )

default

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus ( uint64_t  seed )

inline

Definition at line 204 of file RandomGenerators.hpp.

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus ( )

inline

Take time() to seed this generator

Definition at line 209 of file RandomGenerators.hpp.

Member Function Documentation

void ApproxMVBB::RandomGenerators::XorShift128Plus::jump ( )

inline

This is the jump function for the generator. It is equivalent to 2^64 calls to next(); it can be used to generate 2^64 non-overlapping subsequences for parallel computations.

Definition at line 230 of file RandomGenerators.hpp.

static constexpr result_type ApproxMVBB::RandomGenerators::XorShift128Plus::max ( )

inlinestatic

Definition at line 86 of file RandomGenerators.hpp.

static constexpr result_type ApproxMVBB::RandomGenerators::XorShift128Plus::min ( )

inlinestatic

Definition at line 85 of file RandomGenerators.hpp.

uint64_t ApproxMVBB::RandomGenerators::XorShift128Plus::operator() ( )

inline

Generate random number

Definition at line 219 of file RandomGenerators.hpp.

void ApproxMVBB::RandomGenerators::XorShift128Plus::seed ( uint64_t  seed )

inline

Definition at line 213 of file RandomGenerators.hpp.

Member Data Documentation

uint64_t ApproxMVBB::RandomGenerators::XorShift128Plus::s[2]

private

Definition at line 64 of file RandomGenerators.hpp.

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

• RandomGenerators.hpp