-#define XHASHTABLE(x) XRECORD (x, hashtable, struct hashtable)
-#define XSETHASHTABLE(x, p) XSETRECORD (x, p, hashtable)
-#define HASHTABLEP(x) RECORDP (x, hashtable)
-#define GC_HASHTABLEP(x) GC_RECORDP (x, hashtable)
-#define CHECK_HASHTABLE(x) CHECK_RECORD (x, hashtable)
-#define CONCHECK_HASHTABLE(x) CONCHECK_RECORD (x, hashtable)