Tests whether an object is a pointer or not.
pointerp pointer => result
An object that may be a FLI pointer.
pointerp tests whether the argument pointer is a pointer.
t if pointer is a pointer, otherwise
nil is returned.
In the following example a pointer,
point, is defined, and an object which is not a pointer is defined. Both are tested using
(setq point (fli:allocate-foreign-object :type :int))
(setq not-point 7)
LispWorks Foreign Language Interface User Guide and Reference Manual - 16 Feb 2015