presto-main/src/main/java/io/prestosql/type/DecimalInequalityOperators.java/DecimalInequalityOperators/distinctBlockPositionLongLong
class DecimalInequalityOperators:    @UsedByGeneratedCode
    public static boolean distinctBlockPositionLongLong(Block left, int leftPosition, Block right, int rightPosition)
    {
        if (left.isNull(leftPosition) != right.isNull(rightPosition)) {
            return true;
        }
        if (left.isNull(leftPosition)) {
            return false;
        }

        long leftLow = left.getLong(leftPosition, 0);
        long leftHigh = left.getLong(leftPosition, SIZE_OF_LONG);
        long rightLow = right.getLong(rightPosition, 0);
        long rightHigh = right.getLong(rightPosition, SIZE_OF_LONG);
        return UnscaledDecimal128Arithmetic.compare(leftLow, leftHigh, rightLow, rightHigh) != 0;
    }