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From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Subject: Re: remquo - underlying logic
Date: Thu, 30 Nov 2017 19:59:57 +0100	[thread overview]
Message-ID: <20171130185956.GS15263@port70.net> (raw)
In-Reply-To: <alpine.LRH.2.02.1712010059520.23842@key0.esi.com.au>

* Damian McGuckin <damianm@esi.com.au> [2017-12-01 05:11:40 +1100]:
> Is there anywhere this is described in detail.
> 
> As part of some research, I was studying an implementation
> 
> https://opensource.apple.com/source/Libm/Libm-315/Source/ARM/remquo.c
> 
> which uses ideas which avoids the fixed point arithmetic.
> 
> While there are some issues with this implementation, some of its ideas may
> produce cleaner and likely shorter code than the current remquo.
> maybe not so much with double but for anything else high, yes.
> 
> Has anybody tried this before?

i think it does similar things than the current
implementation but uses float arithmetics instead
of ints.

i hadn't considered using floats, it may be faster
i don't know, you have to benchmark etc.

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.


  reply	other threads:[~2017-11-30 18:59 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-30 18:11 Damian McGuckin
2017-11-30 18:59 ` Szabolcs Nagy [this message]
2017-11-30 20:29   ` Damian McGuckin
2017-11-30 21:16     ` John Reiser
2017-11-30 21:17     ` Szabolcs Nagy
2017-12-04  8:10       ` Damian McGuckin
2017-12-06  1:17       ` Damian McGuckin
2017-12-06 10:37         ` Szabolcs Nagy
2017-12-07  1:09           ` Damian McGuckin
2017-12-08  0:42             ` Szabolcs Nagy

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