From: Robert Klemme <shortcutter@...>
Date: 2006-05-10T16:01:07+09:00
Subject: Re: Exponential calcs with very large exponents

2006/5/10, Sergey Volkov <gm.vlkv@gmail.com>:

> Btw: do you know how to find most significant bit faster?

Dunno whether any of these is faster

>> require 'mathn'
=> true
>> x=1<<40
=> 1099511627776
>> k=("%b" % x).length - 1
=> 40
>> x[k]
=> 1
>> k=Math.log(x)/Math.log(2)
=> 40.0
>> x[k]
=> 1

Kind regards

robert

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