}
	Output = int(s)
}

func TestReverseBytes(t *testing.T) {
	for _, test := range []struct {
		x, r uint64
	}{
		{0, 0},
		{0x01, 0x01 << 56},
		{0x0123, 0x2301 << 48},
		{0x012345, 0x452301 << 40},
		{0x01234567, 0x67452301 << 32},
		{0x0123456789, 0x8967452301 << 24},
		{0x0123456789ab, 0xab8967452301 << 16},
		{0x0123456789abcd, 0xcdab8967452301 << 8},