}
	if want, got = c64s-a, subr64s(a); got != want {
		panic(fmt.Sprintf("subr64s(%x) = %x, want %x", a, got, want))
	}
	if want, got = a&^c64a, bic64(a); got != want {
		panic(fmt.Sprintf("bic64(%x) = %x, want %x", a, got, want))
	}