Re: SRFI-144 - initial port

[Diego]

> It would be great to use (chicken flonum)

As it is now, fl+, fl*, etc. are defined in terms of (chicken flonum) 
procedures and foldr or foldl. It's possible that we could get a bit of a 
performance gain by internally just using (chicken flonum) procedures directly 
instead of relying on fl+ etc.

> and, where necessary, direct FFI calls and see if they are faster

I agree about FFI procedures. I would very strongly expect them to be faster 
than the scheme procedures, but I'd rather not do it without an actual 
benchmark, which I haven't gotten around to yet.

- Diego