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From: "John B. Matthews" <nospam@nospam.invalid>
Newsgroups: comp.lang.ada
Subject: Re: unsigned type
Date: Sun, 28 Jun 2009 19:15:08 -0400
Organization: The Wasteland
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In article <1eS1m.2153$j84.1865@nlpi061.nbdc.sbc.com>,
 Gary Scott <garylscott@sbcglobal.net> wrote:

> tmoran@acm.org wrote:
[...]
> > Ada's equivalent is Natural.
> 
> Sorry for the naive question.  I'm curious as to the reason for the 
> term "natural".  "Unnatural" would seem more descriptive :)

Well, there's this:

<http://en.wikipedia.org/wiki/Natural_number>

The package Standard says, in part:

   type Integer is range implementation-defined;

      subtype Natural  is Integer range 0 .. Integer'Last;
      subtype Positive is Integer range 1 .. Integer'Last;

<http://www.adaic.com/standards/05rm/html/RM-A-1.html>

Sadly, I've had to look it up more than once. :-)

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>