Re: [Stlport-devel] num get float

[Petr O. <pt...@is...>]

On Thursday 12 July 2007 23:24, François Dumont wrote:
>     No, this is not that Uli.
> 
>     It simply looks like I was wrongly interpreting the digits10 value. 
> digits10 is only the number of digits represented by mantissa but a 
> float type is not only composed of the mantissa which explain this 
> additional 2 because we want to total number of digits. Now the question 
> is, how much should be this constant for long double with 64 bits 
> mantissa? I will do some test to find the answer...

Not test, but D. E. Knuth, The Art of Computer Programming, v.2.

> 
> Bests
> 
> Ulrich Eckhardt wrote:
> > [CCing you directly, sourceforge doesn't take mails from my home account and I 
> > won't be at work for maybe another two weeks.]
> >
> > On Sunday 08 July 2007 15:33:21 François Dumont wrote:
> >   
> >> If you are asking for tests about definition of maxdigits in
> >> _Stl_string_to_double I haven't any. I simply think that it should be
> >> set to numeric_limits<double>::digits10, adding 2 is useless even if it
> >> is not a bug.
> >>     
> >
> > I'm not sure, but here's one guess:
> >  num digits + sign + NUL
> >
> > Uli