If
pointer1
points to the same address as
pointer2
,
pointer-eq
returns
t
, otherwise it returns
nil
.
The function
pointer-eq
tests whether two pointers point to the same address, and returns
t
if they do, and
nil
if they do not.
In the following example a pointer,
point1
, is defined, and
point2
is set equal to it. Both are then tested to see if they are equal to each other using
pointer-eq
. Then
point2
is defined to point to a different object, and the two pointers are tested for equality again.
(setq point1 (fli:allocate-foreign-object :type :int))
(setq point2 point1)
(fli:pointer-eq point1 point2)
(setq point2 (fli:allocate-foreign-object :type :int))
(fli:pointer-eq point1 point2)