(defun primify (x)
(declare (type unsigned-byte x))
(do ((n (logior x 1) (+ n 2)))
- ((sb!sys:positive-primep n)
- n)))
+ ((positive-primep n) n)))
\f
;;;; info classes, info types, and type numbers, part I: what's needed
;;;; not only at compile time but also at run time