Re: [PATCH] strings: helper for maximum decimal encoding of anunsigned integer

From: Al Viro
Date: Tue Aug 21 2012 - 18:06:10 EST


On Tue, Aug 21, 2012 at 05:22:27PM -0400, Jim Rees wrote:
> J. Bruce Fields wrote:
>
> From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
>
> 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@xxxxxxxxx>. 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.
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