[R] exactly representable numbers

[Marc Halbrügge]

> thanks for this.  Wouldn't it be a good idea to have some function
> that returns "the smallest exactly representable number strictly  
> greater than x"?
> 
> Or does this exist already?
I didn't read the whole thread, but yes, this exists. It's in the
standard c library, header "math.h" and called "nextafter"

Shouldn't be too hard to get it into R


Greetings
Marc