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objective c - Getting the Leftmost Bit

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

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


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