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Re: Off topic 'C' question

From: Alfred Perlstein <bright(at)wintelcom(dot)net>
To: Mike Mascari <mascarm(at)mascari(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Off topic 'C' question
Date: 2000-07-30 03:26:22
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Lists: pgsql-hackers
* Mike Mascari <mascarm(at)mascari(dot)com> [000729 18:40] wrote:
> I have a quick question. What is the quickest way to determine
> the next highest power of two which is greater than a given
> integer in 'C'. For example, given the number 7, I would like to
> return 8. Given the number 13, I would like to return 16, etc. Is
> there a gem to do this without shifting a bit value from 1 left
> up to a maximum of 32 (or 64) iterations? 
> Thanks for any info, 

Think "binary search".


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