func strhash()

in bench/hash.go [32:60]

• 16 lines of code
• 2 McCabe index (conditional complexity)

func strhash(s string, h uintptr) uintptr

//go:noescape
func inthash(i int, h uintptr) uintptr

// PtrSize is the size of a pointer in bytes - unsafe.Sizeof(uintptr(0)) but as an ideal constant.
// It is also the size of the machine's native word size (4 on 32-bit systems, 8 on 64-bit).
const PtrSize = 4 << (^uintptr(0) >> 63)

const hashRandomBytes = PtrSize / 4 * 64

const (
	// FNV-1a
	offset32 = uint32(2166136261)
	prime32  = uint32(16777619)

	// Init32 is what 32 bits hash values should be initialized with.
	Init32 = offset32
)

// used in asm_{386,amd64,arm64}.s to seed the hash function
var aeskeysched [hashRandomBytes]byte

func init() {
	for i := 0; i < hashRandomBytes; i++ {
		aeskeysched[i] = byte(i + 1)
	}
	aeskeysched[hashRandomBytes-1] = 0xFF
}