Apropos

fmakunboundFunction

    Syntax

    fmakunbound name name

    Pronunciation

    [ ef makϵn bau̇nd ] or [ ef mākϵn bau̇nd ]

    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