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For example, consider the following in Kawa's notation: (lambda (x :: <flonum> y :: <flonum>) :: <flonum> (/ x y))Unless the compiler can be sure that / is the standard division procedure, there is not much it can do.
Of course, module systems often allow the compiler to figure out what / really is, and a module system will come fitted as standard in R6RS.
Regards, Alan -- Dr Alan Watson Centro de Radioastronomía y Astrofísica Universidad Astronómico Nacional de México