.. efun:: int closurep(mixed)

  Returns 1 if the argument is a closure.

.. history
  :history 3.2@70 introduced:

  .. seealso:: :efun:`clonep`, :efun:`floatp`, :efun:`mappingp`, :efun:`objectp`, :efun:`intp`, :efun:`referencep`, :efun:`pointerp`, :efun:`stringp`, :efun:`symbolp`, :efun:`structp`