+(defknown %last0 (list) t (foldable flushable))
+(defknown %last1 (list) t (foldable flushable))
+(defknown %lastn/fixnum (list (and unsigned-byte fixnum)) t (foldable flushable))
+(defknown %lastn/bignum (list (and unsigned-byte bignum)) t (foldable flushable))
+