objective c - Getting the Leftmost Bit

Question

I have a 5 bit integer that I'm working with. Is there a native function in Objective-C that will let me know which bit is the leftmost?

i.e. I have 01001, it would return 8 or the position.

Thanks

Answer 1

You can build a lookup table, with 32 elements: 0, 1, 2, 2, 3, etc.