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=-1.9 required=5.0 tests=BAYES_00
	autolearn=unavailable autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail
From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: 32-bit float and 64-bit float
Date: Mon, 14 Aug 2017 11:01:46 +0200
Organization: Aioe.org NNTP Server
Message-ID: <omrotq$1me3$1@gioia.aioe.org>
References: <omqjtc$a7d$1@gioia.aioe.org> <omrhgm$1bvn$1@gioia.aioe.org>
 <omrnp7$1ko3$1@gioia.aioe.org>
NNTP-Posting-Host: vZYCW951TbFitc4GdEwQJg.user.gioia.aioe.org
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Complaints-To: abuse@aioe.org
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101
 Thunderbird/52.2.1
Content-Language: en-US
X-Notice: Filtered by postfilter v. 0.8.2
Xref: news.eternal-september.org comp.lang.ada:47722
Date: 2017-08-14T11:01:46+02:00
List-Id: <comp.lang.ada>

On 14/08/2017 10:42, Victor Porton wrote:

> I think Float and Long_Float will do the job on most compilers and machines.

Possibly.

> But maybe I should instead use "digits" in Ada? If yes, then how many
> digits?

Yes, digits is the safe way. You find IEEE 754 precision data for 
instance in Wikipedia:

    https://en.wikipedia.org/wiki/IEEE_754

But you would, AFAIK, lose non-numeric values (like Inf), which is a 
good thing.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de