Re: [Scheme-reports] More NaN and Infsanity

[John Cowan <cowan@x>]

Peter Bex scripsit:

> What about (rationalize x y) where x or y are nan or inf?
> The notation seems to indicate that nan is allowed, since it's
> "real but not rational".  However, that same sentence seems to
> indicate that rationalizing NaN would be an error.

Rationalizing infinity makes some sense, but rationalizing NaN does not,
at least not to me.

> On the other hand, R6RS seems to indicate that rationalize is
> allowed to return +nan.0, see its examples:

Indeed, which cannot be right: both R5RS and R6RS require that the result
be rational.

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