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| ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
12.2.53 numerator, denominator | Function
  Syntax: numerator rational numerator denominator rational denominator Arguments and Values: rational - a rational. numerator - an integer. denominator - a positive integer. Description: numerator and denominator reduce rational to canonical form and compute the numerator or denominator of that number. numerator and denominator return the numerator or denominator of the canonical form of rational. If rational is an integer, numerator returns rational and denominator returns 1. Examples:
       (numerator 1/2)  1
       (denominator 12/36)  3
       (numerator -1)  -1
       (denominator (/ -33))  33
       (numerator (/ 8 -6))  -4
       (denominator (/ 8 -6))  3
  See Also: / Notes:
       (gcd (numerator x) (denominator x))  1
Allegro CL Implementation Details: None.

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