[A83] Re: arctan

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: arctan
From: Patai Gergely <patai.ti@freemail.hu>
Date: Fri, 2 Aug 2002 11:52:25 +0200 (CEST)
In-Reply-To: <freemail.20020702105657.63028@fm4.freemail.hu>
Reply-To: assembly-83@lists.ticalc.org


> For my turn, I have a really annoying question to all of 
> you: fast arctan, or rather arctan2 for two 8-bit 
> coordinates with a 8-bit output as well. The algorithm 
> doesn't need to have a deadly precision, and error of 
> around +/- 5 degrees is acceptable. A maximum running 
time 
> of about 1500 cycles should be possible.
> 
Here's some kind of solution I was thinking about, but I'd 
like to know if anyone has a better (faster/more accurate) 
idea.

http://cobb.host.sk/misc/atan2.asm

PG

References:

[A83] arctan

From: Patai Gergely <patai.ti@freemail.hu>

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