[plt-scheme] When does eqv? differ from eq? , from equal?

> What is it in your opinion?

That eq? belongs in Common Lisp but not in Scheme. (I think this is a  
variant of Godwin's law: all discussions of judgement in Scheme will  
end up at some point invoking Common Lisp.) Or, being more up to date,  
that eq? belongs in the R6RS, along with the fixnum and flonum  
libraries.

Does anyone have any (correct and real) code that is too slow with  
eqv? but fast enough with eq?

Regards,

Alan
-- 
Alan Watson
http://www.alan-watson.org/