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)