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5.3.5 fmakunbound [Function]

fmakunbound namename

Pronunciation::

pronounced ,ef 'mak e n,baund or pronounced ,ef 'm\=a k e n,baund

Arguments and Values::

name—a function name.

Description::

Removes the function or macro definition, if any, of name in the global environment.

Examples::
     (defun add-some (x) (+ x 19)) ⇒  ADD-SOME
      (fboundp 'add-some) ⇒  true
      (flet ((add-some (x) (+ x 37)))
         (fmakunbound 'add-some)
         (add-some 1)) ⇒  38
      (fboundp 'add-some) ⇒  false
Exceptional Situations::

Should signal an error of type type-error if name is not a function name.

The consequences are undefined if name is a special operator.

See Also::

fboundp , makunbound