Here is my defcfun as I normally write it,
;; Size Mat::size() const
;; Size* cv_Mat_size(Mat* self)
(defcfun ("cv_Mat_size" mat-size) (:pointer size)
(self (:pointer mat)))
the
;; Size Mat::size() const
is the C++ function declaration with a Size return value
The ;; Size* cv_Mat_size(Mat* self) is the C wrapper function declaration with
a Size* return value
This is my defcfun with a (:pointer size) return value
(defcfun ("cv_Mat_size" mat-size) (:pointer size)
(self (:pointer mat)))
In my Documentation for this function I list the Common Lisp function
declaration as
(MAT-SIZE (SELF (:POINTER MAT)))
I couldn't figure out if I should add a return value
but in C++ the return value always goes up front i/e ;; Size Mat::size() const
Is it common to put return values on Lisp/CFFI function declarations and if so
where
in this declaration (MAT-SIZE (SELF (:POINTER MAT))) should I put mine
btw on the CLHS I didn't see or missed return values on any function declaration
Thanks in advance for any takers=)
Good Day.
