;;; Perhaps we should have to prove that the denominator is nonzero before
;;; doing them? (Also the DOLIST over macro calls is weird. Perhaps
;;; just FROB?) -- WHN 19990917
;;; Perhaps we should have to prove that the denominator is nonzero before
;;; doing them? (Also the DOLIST over macro calls is weird. Perhaps
;;; just FROB?) -- WHN 19990917