From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/12184 Path: news.gmane.org!.POSTED!not-for-mail From: Damian McGuckin Newsgroups: gmane.linux.lib.musl.general Subject: Re: remquo - underlying logic Date: Fri, 1 Dec 2017 07:29:05 +1100 (AEDT) Message-ID: References: <20171130185956.GS15263@port70.net> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-Trace: blaine.gmane.org 1512073760 3779 195.159.176.226 (30 Nov 2017 20:29:20 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 30 Nov 2017 20:29:20 +0000 (UTC) User-Agent: Alpine 2.02 (LRH 1266 2009-07-14) To: musl@lists.openwall.com Original-X-From: musl-return-12200-gllmg-musl=m.gmane.org@lists.openwall.com Thu Nov 30 21:29:16 2017 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.84_2) (envelope-from ) id 1eKVSN-0000ZC-4q for gllmg-musl@m.gmane.org; Thu, 30 Nov 2017 21:29:15 +0100 Original-Received: (qmail 3593 invoked by uid 550); 30 Nov 2017 20:29:20 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 3567 invoked from network); 30 Nov 2017 20:29:19 -0000 X-Authentication-Warning: key0.esi.com.au: damianm owned process doing -bs In-Reply-To: <20171130185956.GS15263@port70.net> Xref: news.gmane.org gmane.linux.lib.musl.general:12184 Archived-At: On Thu, 30 Nov 2017, Szabolcs Nagy wrote: >> https://opensource.apple.com/source/Libm/Libm-315/Source/ARM/remquo.c >> >> Has anybody tried this before? > i think it does similar things than the current implementation but uses > float arithmetics instead of ints. Yes. > i hadn't considered using floats, it may be faster i don't know, you > have to benchmark etc. That's what we plan to do as part of our research. > i can add this to my math todo items, but i can't promise to look into > it soon unless there is a good reason to. It is on MY own TO-DO list. I was asking the question in case anybody had done it before and found it useless, could think of major pitfalls, or had any pearls of wisdom before we started. I will keep you posted. Thanks - Damian Pacific Engineering Systems International, 277-279 Broadway, Glebe NSW 2037 Ph:+61-2-8571-0847 .. Fx:+61-2-9692-9623 | unsolicited email not wanted here Views & opinions here are mine and not those of any past or present employer