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12.2.44 numberp [Function]

numberp objectgeneralized-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)