Is it possible to determine the power of two (bit number) with one bitwise operation (without cyclic shift)?

Question

Programming

Everything is in the header.
How to get 0001000000 from
0001000000==128 -> 7 without

for n>0; k++{
n<<1
}
return k

Maybe?

Answer 1

If you do not have at hand some specific processor (or ALU) that has such an operation, no way.