Function HashFP

pkg/util/hash_fp.go:12–14

HashFP simply moves entropy from the most significant 48 bits of the fingerprint into the least significant 16 bits (by XORing) so that a simple MOD on the result can be used to pick a mutex while still making use of changes in more significant bits of the fingerprint. (The fast fingerprinting funct

(fp model.Fingerprint)

// really want to make use of every change in the fingerprint to vary mutex
// selection.)
func HashFP(fp model.Fingerprint) uint32 {
	return uint32(fp ^ (fp >> 32) ^ (fp >> 16))
}