in bench/hash.go [132:141]
func hashUInt32(i uint32) uint32 {
b := [4]byte{}
binary.BigEndian.PutUint32(b[:], i)
h := Init32
h = (h ^ uint32(b[0])) * prime32
h = (h ^ uint32(b[1])) * prime32
h = (h ^ uint32(b[2])) * prime32
h = (h ^ uint32(b[3])) * prime32
return h
}