Re: Support for decimal type

>
> I was making a banking app, and realised that there is insufficient
> support for using the decimal type.
>
> On summing a series of amounts I was getting values like 136.6000000345,


If you deal with xs:decimal throughout, you shouldn't get that kind of
results in the first place unless you do divisions, assuming the source
data is good.


> so I was having to do things like
>
>         round(amount*100) div 100


> Ideally I would have liked the XPath3 function round(d, precision)
> https://www.w3.org/TR/xpath-functions/#func-round


Funnily enough we have an issue and StackOverflow question about this
rounding:


https://stackoverflow.com/questions/44304839/orbeon-xforms-round-when-formatting-true
    https://github.com/orbeon/orbeon-forms/issues/3226

It's definitely an omission from XPath 2.

but that still doesn't solve my problem of formatting 25 as 25.00 or 25.6
> as 25.60
>
> XPath3 format-number is a bit heavyweight for my needs
> https://www.w3.org/TR/xpath-functions/#func-format-number


It comes from XSLT 2, and it's a decent formatting function. We use this
for formatting in our number component.

How about a function decimal(d, 2) yielding a string with 2 places of
> accuracy?


The thing is, you quickly have to decide whether you want thousands
separators, how you want to represent negative numbers, etc. I would vote
for `format-number()` so we don't have to reinvent the wheel.

-Erik