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From: Bill Findlay <findlaybill@blueyonder.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: GNAT for AVR - Mathematical Functions
Date: Mon, 17 Sep 2018 18:28:17 +0100
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Date: 2018-09-17T18:28:17+01:00
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On 17 Sep 2018, ada.newcomer@gmail.com wrote
(in article<ed6bc2e2-a2e1-4a0b-b253-8142d47518c9@googlegroups.com>):

> Hello.
>
> I'm programming an ATmega328P with the GNAT compiler for AVR.
>
> I need to use the Sqrt, Arctan and Atan2 functions. But maybe in the future I
> will need to use some more.
>
> I don't have access to the regular Ada.Numerics package.
>
> By now, I wrote the Sqrt using the Newton's method and Arctan using Taylor
> series.
>
> I would like to know if there is a better way to use/implement mathematical
> functions (maybe import them from C?).
>
> I really appreciate any help.

Since you have sqrt, see:<http://www.findlayw.plus.com/KDF9/#ATN>

-- 
Bill Findlay