lispdoc - results for numerator

(numerator number)

Function: Return the numerator of NUMBER, which must be rational.

Example:

(defun rat-numerator (rat)
  "The numerator of a rational expression."
  (typecase rat
    (cons (car rat))
    (number (numerator rat))
    (t rat)))

Mentioned in:
CLtL2 - 12.6. Type Conversions and Component Extractions on Numbers
CLtL2 - 22.1.6. What the Print Function Produces
HyperSpec - Function NUMERATOR, DENOMINATOR
Successful Lisp - assert