bits are the Lisp object. Some people call such Lisp_Objects "immediate".
The object is obtained by masking off the type bits.
- Bit 1 is used as a value bit by splitting the Lisp integer type
+ Bit 1 is used as a value bit by splitting the Lisp integer type
into two subtypes, Lisp_Type_Int_Even and Lisp_Type_Int_Odd.
By this trickery we get 31 bits for integers instead of 30.
a pointer to a structure containing the object. The pointer is
obtained by masking off the type and mark bits.
- All pointer-based types are coalesced under a single type called
+ All pointer-based types are coalesced under a single type called
Lisp_Type_Record. The type bits for this type are required by the
implementation to be 00, just like the least significant bits of
word-aligned struct pointers on 32-bit hardware. This requires that