> On 6 Sep 2020, at 16:06, Esteban Maringolo <emaring...@gmail.com> wrote:
>
> Hi,
>
> Continuing with my issues with decimals, I'm having one issue that is
> not clear to me why it happens.
>
> If I do:
> (9.1 + (-2.0)) roundTo: 0.1.
> "7.1000000000000005"
>
> I expect to get a single decimal Float (rounded with whatever
> precision, but a single decimal).
>
> Even if I do something like this:
> 7.1 roundTo: 0.1
>
> It gives the wrong result.
>
> In VW and VAST it provides the right result.
> (9.1 + (-2.0)) roundTo: 0.1 "7.1"
>
> In Dolphin it also returns the wrong result, it seems to use the same
> algorithm to round it.
>
> Is this a bug?
Maybe.
But I would not approach the problem of rounding like that.
You probably want to control how numbers are printed.
I would keep the numbers themselves at maximum internal precision and only do
something when printing them.
1 / 3 asFloat printShowingDecimalPlaces: 1.
Since you like Seaside, the following is even much more powerful (has *many*
options):
GRNumberPrinter new precision: 1; print: 1/3 asFloat.
Check it out.
>
> Esteban A. Maringolo
>
