GNU bug report logs - #22689
25.1.50; implement logcount

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Package: emacs;

Reported by: Mark Oteiza <mvoteiza <at> udel.edu>

Date: Mon, 15 Feb 2016 23:20:01 UTC

Severity: wishlist

Found in version 25.1.50

Done: Mark Oteiza <mvoteiza <at> udel.edu>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Mark Oteiza <mvoteiza <at> udel.edu>
Cc: 22689 <at> debbugs.gnu.org
Subject: bug#22689: [PATCH] Add logcount
Date: Sat, 30 Sep 2017 20:53:26 +0300

> Date: Sat, 30 Sep 2017 13:07:58 -0400
> From: Mark Oteiza <mvoteiza <at> udel.edu>
> Cc: 22689 <at> debbugs.gnu.org
> 
> Ok.  Patch including this, Benjamin's catch, and documentation.

Thanks.  A minor comment on the docs:

> +@defun logcount integer
> +This function returns the population count of @var{integer}: the
> +number of ones in the binary representation of @var{integer}.

I would mention here the "Hamming weight" term (in @dfn) that is
referenced in NEWS, and I would also add a few index entries:

 @cindex popcount
 @cindex Hamming weight
 @cindex counting set bits
This bug report was last modified 7 years and 292 days ago.

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