#define EXTEND4(X) (LSSEXT ((X), 3))
#define EXTEND5(X) (LSSEXT ((X), 4))
#define EXTEND8(X) ((signed_word)(signed8)(X))
+#define EXTEND11(X) (LSSEXT ((X), 10))
#define EXTEND15(X) (LSSEXT ((X), 14))
#define EXTEND16(X) ((signed_word)(signed16)(X))
+#define EXTEND24(X) (LSSEXT ((X), 23))
#define EXTEND32(X) ((signed_word)(signed32)(X))
#define EXTEND64(X) ((signed_word)(signed64)(X))