Perhaps I misunderstood what clz() does, but does the code you posted really work? It gives me 8 for $z=17. Shouldn't it be 27 for 32bit and 59 for 64bit? 17=10001 (with 59 leading zeros and MSB is at the zeros-side, left)

In reply to Re: Most Significant Set Bit by bliako
in thread Most Significant Set Bit by coldr3ality

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