ApproxMVBB::RandomGenerators::XorShift128Plus Class Reference

#include <RandomGenerators.hpp>

List of all members.

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

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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.

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Constructor & Destructor Documentation

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus

(

const XorShift128Plus &

gen

)

ApproxMVBB::RandomGenerators::XorShift128Plus::XorShift128Plus

(

XorShift128Plus &&

gen

)

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.

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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

(

)

[inline, static]

Definition at line 86 of file RandomGenerators.hpp.

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

(

)

[inline, static]

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.

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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