-struct position *compute_motion P_ ((int, int, int, int, int, int, int,
- int, int, int, struct window *));
-struct position *vmotion P_ ((int, int, struct window *));
-int skip_invisible P_ ((int, int *, int, Lisp_Object));
+struct position *compute_motion P_ ((EMACS_INT from, EMACS_INT fromvpos,
+ EMACS_INT fromhpos, int did_motion,
+ EMACS_INT to, EMACS_INT tovpos,
+ EMACS_INT tohpos,
+ EMACS_INT width, EMACS_INT hscroll,
+ EMACS_INT tab_offset, struct window *));
+struct position *vmotion P_ ((EMACS_INT from, EMACS_INT vtarget,
+ struct window *));
+EMACS_INT skip_invisible P_ ((EMACS_INT pos, EMACS_INT *next_boundary_p,
+ EMACS_INT to, Lisp_Object window));