typedef struct {
	CELL header;
	CELL object;
} F_WRAPPER;

INLINE F_WRAPPER *untag_wrapper_fast(CELL tagged)
{
	return (F_WRAPPER*)UNTAG(tagged);
}

INLINE CELL tag_wrapper(F_WRAPPER *wrapper)
{
	return RETAG(wrapper,WRAPPER_TYPE);
}

void primitive_wrapper(void);
void fixup_wrapper(F_WRAPPER *wrapper);
void collect_wrapper(F_WRAPPER *wrapper);