From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=0.0 required=5.0 tests=RCVD_IN_DNSWL_NONE
	autolearn=ham autolearn_force=no version=3.4.4
Received: (qmail 30067 invoked from network); 25 Dec 2020 18:13:58 -0000
Received: from ewsd.inri.net (107.191.116.128)
  by inbox.vuxu.org with ESMTPUTF8; 25 Dec 2020 18:13:58 -0000
Received: from mimir.eigenstate.org ([206.124.132.107]) by ewsd; Fri Dec 25 13:13:16 -0500 2020
Received: from abbatoir.fios-router.home (pool-74-101-2-6.nycmny.fios.verizon.net [74.101.2.6])
	by mimir.eigenstate.org (OpenSMTPD) with ESMTPSA id e51082d4 (TLSv1.2:ECDHE-RSA-AES256-SHA:256:NO);
	Fri, 25 Dec 2020 10:13:05 -0800 (PST)
Message-ID: <C3BA78DCEE346F5F67FB233A0F16E847@eigenstate.org>
To: kemalinanc8@gmail.com
To: 9front@9front.org
Date: Fri, 25 Dec 2020 10:13:03 -0800
From: ori@eigenstate.org
In-Reply-To: <CABO6shdLiqQd_L4nSvD6NwN9h56yz7+kabh0Q1q=GSF5yVhu-g@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
List-ID: <9front.9front.org>
List-Help: <http://lists.9front.org>
X-Glyph: ➈
X-Bullshit: configuration strategy firewall realtime optimizer 
Subject: Re: [9front] [PATCH] branchless assembly abs() and labs() for amd64
Reply-To: 9front@9front.org
Precedence: bulk

Quoth Kemal <kemalinanc8@gmail.com>:
> hello,
> 
> i remembered a method to do branchless abs.
> can i send it as a patch?

more code is more work, especially with platform
specific assembly. is there any real world program
where this matters a lot?