XoRoShiRo128PlusPlus Class Reference

xoroshiro128++ PRNG. More...

#include <xoroshiro128plusplus.h>

Public Types
using	result_type = uint64_t

Public Member Functions
constexpr	XoRoShiRo128PlusPlus (uint64_t seedval) noexcept
	XoRoShiRo128PlusPlus (const XoRoShiRo128PlusPlus &)=delete
XoRoShiRo128PlusPlus &	operator= (const XoRoShiRo128PlusPlus &)=delete
	XoRoShiRo128PlusPlus (XoRoShiRo128PlusPlus &&)=default
XoRoShiRo128PlusPlus &	operator= (XoRoShiRo128PlusPlus &&)=default
	~XoRoShiRo128PlusPlus ()=default
constexpr result_type	operator() () noexcept

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

Static Private Member Functions
constexpr static uint64_t	rotl (uint64_t x, int n)
constexpr static uint64_t	SplitMix64 (uint64_t &seedval) noexcept

Private Attributes
uint64_t	m_s0
uint64_t	m_s1

Detailed Description

xoroshiro128++ PRNG.

Extremely fast, not appropriate for cryptographic purposes.

Memory footprint is 128bit, period is 2^128 - 1. This class is not thread-safe.

Reference implementation available at https://prng.di.unimi.it/xoroshiro128plusplus.c See https://prng.di.unimi.it/

Definition at line 19 of file xoroshiro128plusplus.h.

Member Typedef Documentation

result_type

using XoRoShiRo128PlusPlus::result_type = uint64_t

Definition at line 38 of file xoroshiro128plusplus.h.

Constructor & Destructor Documentation

XoRoShiRo128PlusPlus() [1/3]

constexpr XoRoShiRo128PlusPlus::XoRoShiRo128PlusPlus ( uint64_t  seedval )

inlineexplicitconstexprnoexcept

Definition at line 40 of file xoroshiro128plusplus.h.

XoRoShiRo128PlusPlus() [2/3]

XoRoShiRo128PlusPlus::XoRoShiRo128PlusPlus ( const XoRoShiRo128PlusPlus &  )

delete

XoRoShiRo128PlusPlus() [3/3]

XoRoShiRo128PlusPlus::XoRoShiRo128PlusPlus ( XoRoShiRo128PlusPlus &&  )

default

~XoRoShiRo128PlusPlus()

XoRoShiRo128PlusPlus::~XoRoShiRo128PlusPlus ( )

default

Member Function Documentation

entropy()

static constexpr double XoRoShiRo128PlusPlus::entropy ( )

inlinestaticconstexprnoexcept

Definition at line 68 of file xoroshiro128plusplus.h.

max()

static constexpr result_type XoRoShiRo128PlusPlus::max ( )

inlinestaticconstexprnoexcept

Definition at line 67 of file xoroshiro128plusplus.h.

min()

static constexpr result_type XoRoShiRo128PlusPlus::min ( )

inlinestaticconstexprnoexcept

Definition at line 66 of file xoroshiro128plusplus.h.

operator()()

constexpr result_type XoRoShiRo128PlusPlus::operator() ( )

inlineconstexprnoexcept

Definition at line 56 of file xoroshiro128plusplus.h.

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operator=() [1/2]

XoRoShiRo128PlusPlus& XoRoShiRo128PlusPlus::operator= ( const XoRoShiRo128PlusPlus &  )

delete

operator=() [2/2]

XoRoShiRo128PlusPlus& XoRoShiRo128PlusPlus::operator= ( XoRoShiRo128PlusPlus &&  )

default

rotl()

constexpr static uint64_t XoRoShiRo128PlusPlus::rotl ( uint64_t  x, int  n  )

inlinestaticconstexprprivate

Definition at line 24 of file xoroshiro128plusplus.h.

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SplitMix64()

constexpr static uint64_t XoRoShiRo128PlusPlus::SplitMix64 ( uint64_t &  seedval )

inlinestaticconstexprprivatenoexcept

Definition at line 29 of file xoroshiro128plusplus.h.

Member Data Documentation

m_s0

uint64_t XoRoShiRo128PlusPlus::m_s0

private

Definition at line 21 of file xoroshiro128plusplus.h.

m_s1

uint64_t XoRoShiRo128PlusPlus::m_s1

private

Definition at line 22 of file xoroshiro128plusplus.h.

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

• src/test/util/xoroshiro128plusplus.h