You're right. Least significant _set_ bit is (x & -x). Got confused by the (x & (x-1)) and thought rosstex must have meant something more complicated, because

You're right. Least significant _set_ bit is (x & -x). Got confused by the (x & (x-1)) and thought rosstex must have meant something more complicated, because it doesn't seem to result in the usual LSB either :/