From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
X-Received: by 2002:a6b:6312:: with SMTP id
 p18-v6mr1606692iog.43.1537859685605;
        Tue, 25 Sep 2018 00:14:45 -0700 (PDT)
X-Received: by 2002:a9d:5c02:: with SMTP id o2-v6mr22434otk.7.1537859685368;
 Tue, 25 Sep 2018 00:14:45 -0700 (PDT)
Newsgroups: comp.lang.ada
Date: Tue, 25 Sep 2018 00:14:45 -0700 (PDT)
In-Reply-To: <ed6bc2e2-a2e1-4a0b-b253-8142d47518c9@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=160.46.252.18;
 posting-account=mOyWBQoAAAD7S-NBmMUOr9hRClcL0vqR
NNTP-Posting-Host: 160.46.252.18
References: <ed6bc2e2-a2e1-4a0b-b253-8142d47518c9@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <89ebac93-54c9-40bd-9867-fca6febc3ecf@googlegroups.com>
Subject: Re: GNAT for AVR - Mathematical Functions
From: R R <rrr.eee.27@gmail.com>
Injection-Date: Tue, 25 Sep 2018 07:14:45 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!news.gegeweb.eu!gegeweb.org!feed.ac-versailles.fr!proxad.net!feeder1-2.proxad.net!209.85.166.216.MISMATCH!j6-v6no31327ith.0!news-out.google.com!z5-v6ni46ite.0!nntp.google.com!x188-v6no30369ite.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Xref: reader02.eternal-september.org comp.lang.ada:54418
Date: 2018-09-25T00:14:45-07:00
List-Id: <comp.lang.ada>

On Monday, September 17, 2018 at 4:22:47 AM UTC+2, Ada Newcomer wrote:
> Hello.
>=20
> I'm programming an ATmega328P with the GNAT compiler for AVR.
>=20
> I need to use the Sqrt, Arctan and Atan2 functions. But maybe in the futu=
re I will need to use some more.
>=20
> I don't have access to the regular Ada.Numerics package.
>=20
> By now, I wrote the Sqrt using the Newton's method and Arctan using Taylo=
r series.
>=20
> I would like to know if there is a better way to use/implement mathematic=
al functions (maybe import them from C?).
>=20
> I really appreciate any help.

The old AVR-ADA project never supported floting point math. The AVR 8bit pr=
ocessors are not made for that, even though you can use float and double in=
 Arduino. The AVR compiler by Adacore from around 2011 did support floating=
 point variables as far as I remember, I am not sure about the math functio=
ns.

regards
    Rolf