🚀 go-pugleaf

I'm trying to add a group of doubles (for column totals in my grid) and
I'm getting STRANGE data with decimal points.  Seemingly randomly, it
will throw on an extra 15 or so digits.  Now, I've read about Floating
Point problems with this, so I'm assuming that this is an off-shoot of
that problem.

Is there a way around this problem?

I'm trying to format the solution using DoubleFormatter, but can't get
the syntax right.  I'm trying:

    DoubleFormatter double_f = new DoubleFormatter(7);
    double_f.setPattern("###.{##}");
    Variant temp_v = new Variant();
    double_f.setFromDouble(temp_v, 7, my_dataRow.getDouble("my_col"));
    my_col.setText(temp_v.toString());

And of course this doesn't do a darn thing.  What am I missing?

Thanks.

Alex