-#define N_LOWTAG_BITS 3
-#define LOWTAG_MASK ((1<<N_LOWTAG_BITS)-1)
-#define N_WIDETAG_BITS 8
-#define WIDETAG_MASK ((1<<N_WIDETAG_BITS)-1)
-
-/* FIXME: Make HeaderValue, CONS, SYMBOL, and FDEFN into inline
- * functions instead of macros. */
-
-#define HeaderValue(obj) ((unsigned long) ((obj) >> N_WIDETAG_BITS))
-
-#define CONS(obj) ((struct cons *)((obj)-LIST_POINTER_LOWTAG))
-#define SYMBOL(obj) ((struct symbol *)((obj)-OTHER_POINTER_LOWTAG))
-#define FDEFN(obj) ((struct fdefn *)((obj)-OTHER_POINTER_LOWTAG))
-