Wild guess here but his compiler probably can recognize that it can replace sy*128 with a bit shift instruction. :-) (thats what I would want) It can't know th

Wild guess here but his compiler probably can recognize that it can replace sy*128 with a bit shift instruction. :-) (thats what I would want) It can't know that with a named constant. (Same would be true for any value that's a power of 2. Usually a real speed up.)