fmakunbound (ANSI and GNU Common Lisp Document)

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#### 5.3.5 fmakunbound [Function]

`fmakunbound` name ⇒ name

#### 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