12.2.44 numberp [Function]

numberp object ⇒ generalized-boolean

Arguments and Values::

object—an object.

generalized-boolean—a generalized boolean.

Description::

Returns true if object is of type number; otherwise, returns false.

Examples::

 (numberp 12) ⇒  true
 (numberp (expt 2 130)) ⇒  true
 (numberp #c(5/3 7.2)) ⇒  true
 (numberp nil) ⇒  false
 (numberp (cons 1 2)) ⇒  false

Notes::

 (numberp object) ≡ (typep object 'number)