Can anybody give me a quick run-down of the status of rationals in MIT C Scheme. We are running 6.1.1 and the 'numerator' and 'denominator' functions don't seem to exist. Is there a newer version with these incorporated. I am doing research in continued fraction arithmetic and would like to be able to use Scheme instead of Common LISP. Thanks for any help, Eric Schneider (eric@cs2.wsu.edu)