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Postings from July 2010
On Wed, 28 Jul 2010, Jan Dubois wrote:
> On Wed, 28 Jul 2010, Zefram wrote:
> > Jan Dubois wrote:
> > >Well, you _could_ add a special case to the string comparison:
> >
> > That would be a mess. The better solution is for negative zero to
> > stringify as "0".
But wouldn't that would eliminate the possibility of printing out a valid
result of an IEEE-754 calculation?
> I'm more and more convinced that using a floating point number in
> boolean context is simply something you should not be doing for
> similar reasons that you generally are not comparing floating point
> numbers for equality.
Even in floating point, 0 is special. When you know what you are doing,
comparing for exactly 0 is both reasonable and reliable.
--
Andy Dougherty doughera@lafayette.edu
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