In racket you'd use this function, fwiw: (λ (n) (bytes-length (string->bytes/utf-8 (format "~s" n))))
(or possibly a variant of it depending on the encoding you were using). Robby On Sun, Dec 26, 2010 at 2:52 AM, Wolfgang De Meuter <wdmeu...@vub.ac.be> wrote: > Hello > > I'm struggling with chapter 2 of the R6RS libraries (relation between Scheme > data objects and bytevectors). Does anyone know a clean&simple way for > - determining the number of bytes needed to push an arbitrary-sized number in > a bytevector; (log nbr 256) is not good enough :-) > - determining whether a floating point number is a double or a single. > > I guess that I must be lacking knowledge about some of the primitives. > > Thx > > Wolf > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
