Function
fli
foreign-slot-offset object slot-name => offset
A pointer to a foreign object or a foreign object.
The name of a slot in object.
The offset, in bytes, of the slot slot-name in the FLI object object.
foreign-slot-offset
returns the offset, in bytes, of a slot in an FLI object. The offset is the number of bytes from the beginning of the object to the start of the slot. For example, the offset of the first slot in any FLI object is 0.
dir
, and then finds the offset of the third slot in the object. (fli:define-c-struct COMPASS (east :int) (west (:c-array :char 20)) (north :int) (south :int)) (setq dir (fli:allocate-foreign-object :type 'COMPASS)) (fli:foreign-slot-offset dir 'north)
foreign-slot-value
size-of