-extern int scan_floor(int *items, int y, int x, int mode);
-extern COMMAND_CODE show_floor(int target_item, int y, int x, int *min_width);
+extern int scan_floor(int *items, POSITION y, POSITION x, int mode);
+extern COMMAND_CODE show_floor(int target_item, POSITION y, POSITION x, TERM_POSITION *min_width);