From: Al Viro <viro@ZenIV.linux.org.uk>
To: Jim Rees <rees@umich.edu>
Cc: "J. Bruce Fields" <bfields@fieldses.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] strings: helper for maximum decimal encoding of an unsigned integer
Date: Tue, 21 Aug 2012 23:06:13 +0100 [thread overview]
Message-ID: <20120821220613.GK23464@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20120821212227.GA14194@umich.edu>
On Tue, Aug 21, 2012 at 05:22:27PM -0400, Jim Rees wrote:
> J. Bruce Fields wrote:
>
> From: "J. Bruce Fields" <bfields@redhat.com>
>
> I've seen a couple examples recently where we've gotten this wrong.
> Maybe something like this would help? Is there some better way?
>
> (Approximation due to Jim Rees).
>
> Please add Suggested-by: Jim Rees <rees@umich.edu>. I'm thinking of
> patenting the algorithm.
Is that a joke? Patenting the fact that log10(256) is 2.408..., which
is about 2.4, which is 24/10? I really hope we are Poe'd... BTW, NAK
the comment - s/36/26/ in there; check it yourself -
$ echo '2^(8*27)' | bc
105312291668557186697918027683670432318895095400549111254310977536
which is 66-digit, not 65 as the estimate would be.
next prev parent reply other threads:[~2012-08-21 22:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 21:29 [PATCH] strings: helper for maximum decimal encoding of an unsigned integer J. Bruce Fields
2012-08-21 21:22 ` Jim Rees
2012-08-21 22:06 ` Al Viro [this message]
2012-08-21 22:19 ` J. Bruce Fields
2012-08-22 0:03 ` Jim Rees
2012-09-10 6:19 ` Jan Engelhardt
2012-09-14 9:17 ` Bernd Petrovitsch
2012-09-14 12:30 ` Jim Rees
2012-09-14 13:14 ` J. Bruce Fields
2012-09-14 13:18 ` Bernd Petrovitsch
2012-09-14 13:51 ` Jim Rees
2012-09-14 13:37 ` Jan Engelhardt
2012-09-14 13:54 ` Jim Rees
2012-09-14 12:59 ` Jan Engelhardt
2012-09-14 13:46 ` Jim Rees
2012-09-14 14:25 ` Jan Engelhardt
2012-09-14 15:00 ` Bernd Petrovitsch
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