Re: [xml] Getting crazy with float parsing

[Aleksey Sanin <aleksey aleksey com>]

Well, another option is to store both string representation and a float 
value
inside LibXML. When you need to do any computation you use float value
but if you need to write the unchanged value back then you simple use the
string. I understand that this makes things more complex but I don't 
think that
using trio all the time is a good idea.

Aleksey.

Igor Zlatkovic wrote:

> Hello,
>
> > The latest baseline of trio (v 1.7) now handles these numbers
> appropriately.
>
> > Consider the following statement
> >
> >  printf("%30.24f\n%30.24f\n%30.24f\n", 39413.80, 1.4, (2.0/3.0));
> >
> > The libc printf on my machine outputs
> >
> >  39413.800000000002910383045673
> >      1.399999999999999911182158
> >      0.666666666666666629659233
> >
> > whereas trio outputs
> >
> >  39413.800000000000000000000000
> >      1.400000000000000000000000
> >      0.666666666666667000000000
> >
> > Let me know if you want to use this, and I'll upgrade libxml to the latest
> > trio baseline.
>
>
> The printf in MS C-runtime 7 (XP) gives
>
>    39413.800000000003000000000000
>        1.399999999999999900000000
>        0.666666666666666630000000
>
> which is not much different to what your libc does. I believe trio should be
> used here.
>
> Ciao
> Igor
>
>
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