go/src/internal/fuzz/pcg.go

type mutatorRand …

var globalInc …

const multiplier …

type pcgRand …

func godebugSeed() *int { … }

// newPcgRand generates a new, seeded Rand, ready for use.
func newPcgRand() *pcgRand { … }

func (r *pcgRand) step() { … }

func (r *pcgRand) save(randState, randInc *uint64) { … }

func (r *pcgRand) restore(randState, randInc uint64) { … }

// uint32 returns a pseudo-random uint32.
func (r *pcgRand) uint32() uint32 { … }

// intn returns a pseudo-random number in [0, n).
// n must fit in a uint32.
func (r *pcgRand) intn(n int) int { … }

// uint32n returns a pseudo-random number in [0, n).
//
// For implementation details, see:
// https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction
// https://lemire.me/blog/2016/06/30/fast-random-shuffling
func (r *pcgRand) uint32n(n uint32) uint32 { … }

// exp2 generates n with probability 1/2^(n+1).
func (r *pcgRand) exp2() int { … }

// bool generates a random bool.
func (r *pcgRand) bool() bool { … }

type noCopy …

// Lock is a no-op used by -copylocks checker from `go vet`.
func (*noCopy) Lock()   { … }

func (*noCopy) Unlock() { … }