go/src/hash/maphash/maphash_runtime.go

//go:linkname runtime_rand runtime.rand
func runtime_rand() uint64

//go:linkname runtime_memhash runtime.memhash
//go:noescape
func runtime_memhash(p unsafe.Pointer, seed, s uintptr) uintptr

func rthash(buf []byte, seed uint64) uint64 { … }

func rthashString(s string, state uint64) uint64 { … }

func randUint64() uint64 { … }

func comparableF[T comparable](h *Hash, v T) { … }