[Chicken-users] Re: IEEE float arithmetic

[Abdulaziz Ghuloum]

John Cowan wrote:

> Abdulaziz Ghuloum scripsit:
>
>
> > The test [for infinity] is obviously bogus since f==f+1.0 for large values of f.
> > (try 1e16)
>
>
> Oops, quite right.
>
> The expression "f != 0.0 && f == f + f" will work, I think.
> 0.0 and NaN are rejected by the left side of "&&", and all
> other finite values by the right side.

Out of curiosity, why not simply do "f==1.0/0.0 || f==-1.0/0.0" to test
if f is +inf.0/-inf.0?

Aziz,,,