assertEquals(0x34, buffer[2] & 0xFF);
        assertEquals(0x12, buffer[3] & 0xFF);
    }

    @Test
    @DisplayName("Should encode and decode 64-bit integers")
    void testInt64Operations() {
        // Given
        long value = 0x123456789ABCDEF0L;
        byte[] buffer = new byte[8];

        // When - encode little endian
        Encdec.enc_uint64le(value, buffer, 0);