RE: [boost] Re: Math Functions - need an expert on NaN to provide a PORTABLE test for NaN and Infinity

From: Paul A. Bristow (boost_at_[hidden])
Date: 2001-09-13 12:41:17

This seems a good idea - but I don't know how to do it,
and have only the least compliant compiler.

Offers of help please!

Paul

> -----Original Message-----
> From: Pete Undecided [mailto:pete_undecided_at_[hidden]]
> Sent: Wednesday, September 12, 2001 9:24 PM
> To: boost_at_[hidden]
> Subject: Re: [boost] Re: Math Functions
>
>
>
> >
> > I am still not clear how best to provide a PORTABLE NaN test.  Ideas
> > please!!
> <.....>
> > Should NaN testing be the subject of a separate BOOST /Standard work?
> > (It SHOULD be very widely used? But isn't because it doesn't work well?)
> >
> > Paul
> >
>
> How about having a seperate low-level fp library similar to the boost
> integer library.  This could define IEEE_single, IEEE_double,
> IEEE_extended
> as well as providing portable versions of is_nan(), is_infinity().
>
> Pete
>
>
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