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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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