- (pos (1- len)))
- (declare (fixnum zero-code pos)
- (simple-string result))
- (do* ((val num (floor (/ val 10)))
- (mod (nth-value 1 (floor val 10))
- (nth-value 1 (floor val 10))))
- ((or (zerop val) (minusp pos)))
- (declare (fixnum val mod))
- (setf (schar result pos) (code-char (+ zero-code mod)))
- (decf pos))
- (when pchar
- (setf (schar result 0) pchar))
- result))
+ (minus? (minusp num))
+ (val (if minus? (- 0 num) num) (floor (/ val 10)))
+ (pos (1- len) (1- pos))
+ (mod (mod val 10) (mod val 10)))
+ ((or (zerop val) (minusp pos))
+ (when pchar
+ (setf (schar result 0) pchar))
+ (when minus? (setf (schar result (if pchar 1 0)) #\-))
+ result)
+ (declare (fixnum val mod zero-code pos) (simple-string result))
+ (setf (schar result pos) (code-char (+ zero-code mod)))))