123.3 + 0.1 is 123.3999999999 ?

[Erik Max Francis]

Grant Edwards wrote:

> In article <895e4ce2.0306021736.13c657a5 at posting.google.com>, D.W.
> wrote:
> 
> > Good article.  It is correct when it says that this happens in any
> > language.  I always thought it was common knowledge among
> > programmers
> > that "1" could be stored as 0.99999999999999999...
> 
> Wha?   I defy you to find a system where 1 isn't stored exactly.

I suspect he's being facetious, since 0.999... = 1.

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