fmakunbound
fmakunbound name → name
[ˌefˈmakə nˌba.und] or [ˌefˈmā kə nˌba.und]
name—a function name.
Removes the function or macro definition, if any, of name in the global environment.
(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
None.
None.
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.
None.