xoroshiro256plusplus

Documentation

Overview

Package xoroshiro256plusplus (XOR/rotate/shift/rotate) with 256 bits internal state, fast generator for floating-point numbers.

Index

• type XoroShiro256PlusPlus
  • func NewSource(seed int64) *XoroShiro256PlusPlus
  • func (x *XoroShiro256PlusPlus) Int63() int64
  • func (x *XoroShiro256PlusPlus) Jump()
  • func (x *XoroShiro256PlusPlus) Seed(seed int64)
  • func (x *XoroShiro256PlusPlus) Uint64() uint64

Types

type XoroShiro256PlusPlus

type XoroShiro256PlusPlus struct {
	// contains filtered or unexported fields
}

XoroShiro256PlusPlus holds the state required by XoroShiro256PlusPlus generator

func NewSource

func NewSource(seed int64) *XoroShiro256PlusPlus

NewSource return a new XoroShiro256PlusPlus random number generator

func (*XoroShiro256PlusPlus) Int63

func (x *XoroShiro256PlusPlus) Int63() int64

Int63 returns a non-negative pseudo-random 63-bit integer as an int64.

func (*XoroShiro256PlusPlus) Jump

func (x *XoroShiro256PlusPlus) Jump()

Jump it is equivalent to 2^128 calls to Uint64().

func (*XoroShiro256PlusPlus) Seed

func (x *XoroShiro256PlusPlus) Seed(seed int64)

Seed use the provvided seed value to init XoroShiro256PlusPlus internal state.

func (*XoroShiro256PlusPlus) Uint64

func (x *XoroShiro256PlusPlus) Uint64() uint64

Uint64 returns the next pseudo random number generated, before start you must provvide seed.