lass::num::RandomXorShift128Plus Class Reference

xorshift128+ pseudorandom number generator More...

#include <random.h>

Public Types
using	result_type = num::Tuint64
	type of return value.
typedef num::Tuint64	TValue
	type of return value.

Static Public Member Functions
static constexpr result_type	min ()
	minimum return value.
static constexpr result_type	max ()
	maximum return value.

Detailed Description

xorshift128+ pseudorandom number generator

Variation on xorshift generator that avoids the linear artifacts the xorshift generators are prone to. In contrast to the XSadd variants, it also passes the BigCrush tests even when bit reversed! As a disadvantage, xorshift128+ is only 1-dimensionally equidistributed while the underlying xorshift128 is 2-dimensionally equidistributed.

This implementation uses 128 bits of state with following shifts: a=23, b=17, c=26. It has a maximal period of 2^128-1

S. Vigna, "Further scramblings of Marsaglia's xorshift generators", Dec 2015, arXiv:1404.0390v2 [cs.DS], http://arxiv.org/abs/1404.0390v2

Definition at line 219 of file random.h.

Member Typedef Documentation

TValue

typedef num::Tuint64 lass::num::RandomXorShift128Plus::TValue

type of return value.

Deprecated

Definition at line 223 of file random.h.

---

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

• random.h
• random.cpp