@ConstantFunction(name = "bitxor", argTypes = {SMALLINT, SMALLINT}, returnType = SMALLINT)
    public static ConstantOperator bitxorSmallInt(ConstantOperator first, ConstantOperator second) {
        return ConstantOperator.createSmallInt((short) (first.getSmallint() ^ second.getSmallint()));
    }
@Test
    public void bitxorSmallInt() {
        assertEquals(0, ScalarOperatorFunctions.bitxorSmallInt(O_SI_10, O_SI_10).getSmallint());
    }