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bug#22689: [PATCH] Add logcount
From: |
Mark Oteiza |
Subject: |
bug#22689: [PATCH] Add logcount |
Date: |
Sat, 30 Sep 2017 19:22:33 -0400 |
User-agent: |
NeoMutt/20170912-48-0df7d3-dirty |
On 30/09/17 at 03:48pm, Paul Eggert wrote:
> I looked at this patch after it landed in 'master'. Thanks for contributing
> it.
>
> A couple of minor improvements. First, the implementation of logcount can
> use the count_one_bits functions already used by Emacs, rather than
> reinventing that wheel; these functions should be just as fast as
> __builtin_popcount etc. when using GCC. Second, logcount should count zero
> bits in negative numbers, for compatibility with Common Lisp. I installed
> the attached two patches to implement these improvements.
Thank you for the improvements--I was not aware of count-one-bits.h but
am pleasantly surprised.
- bug#22689: [PATCH] Add logcount, (continued)
- bug#22689: [PATCH] Add logcount, Mark Oteiza, 2017/09/30
- bug#22689: [PATCH] Add logcount, Eli Zaretskii, 2017/09/30
- bug#22689: [PATCH] Add logcount, Mark Oteiza, 2017/09/30
- bug#22689: [PATCH] Add logcount, Eli Zaretskii, 2017/09/30
- bug#22689: [PATCH] Add logcount, Mark Oteiza, 2017/09/30
- bug#22689: [PATCH] Add logcount, Eli Zaretskii, 2017/09/30
- bug#22689: [PATCH] Add logcount, Mark Oteiza, 2017/09/30
- bug#22689: [PATCH] Add logcount, Benjamin Riefenstahl, 2017/09/30
- bug#22689: [PATCH] Add logcount, Mark Oteiza, 2017/09/30
bug#22689: [PATCH] Add logcount, Paul Eggert, 2017/09/30
- bug#22689: [PATCH] Add logcount,
Mark Oteiza <=