testMagicExhaustive(t, 8)
}
func TestMagicExhaustive8U(t *testing.T) {
	testMagicExhaustiveU(t, 8)
}
func TestMagicExhaustive16(t *testing.T) {
	if testing.Short() {
		t.Skip("slow test; skipping")
	}
	testMagicExhaustive(t, 16)
}
func TestMagicExhaustive16U(t *testing.T) {
	if testing.Short() {
		t.Skip("slow test; skipping")
	}
	testMagicExhaustiveU(t, 16)
}

// exhaustive test of magic for n bits