presto-main/src/main/java/io/prestosql/type/DecimalInequalityOperators.java/DecimalInequalityOperators/distinctLongLong
class DecimalInequalityOperators:    @UsedByGeneratedCode
    public static boolean distinctLongLong(Slice left, boolean leftNull, Slice right, boolean rightNull)
    {
        if (leftNull != rightNull) {
            return true;
        }
        if (leftNull) {
            return false;
        }
        return primitiveLongLong(left, right, IS_RESULT_NOT_EQUAL);
    }