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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada.Strings.Bounded
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Date: Wed, 16 Apr 2008 10:16:44 +0200
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Date: 2008-04-16T10:16:45+02:00
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On Tue, 15 Apr 2008 19:46:12 -0700 (PDT), Eric Hughes wrote:

> On Tue, 15 Apr 2008 06:56:57 -0700 (PDT), Eric Hughes wrote:
>> I assert that that Ada as currently defined has no bound on the size
>> of numbers within universal_integer.
> 
> On Apr 15, 8:58 am, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
>> It specifies the lower bound and leaves the upper bound up to the vendor.
>> Which by no means imply that there were no upper bound.
> 
> That's an upper bound for a compiler, not for "Ada as currently
> defined".  Please check my language carefully.
> 
>> Moreover,
>> because the number of all instances of all existed, existing and future Ada
>> compilers is obviously finite, there also exists the upper bound of
>> universal_integer as a whole.
> 
> "All compilers that were, all that are, and all that will ever be"--
> these are not part of the Ada language definition.  My assertion
> stands.

Neither a bound nor its absence is required. The former does not imply the
latter. Try a certified Ada compiler on:

   X : constant := 2**(2**(2**(2**(2**1000))));

> I would still like to know what you think universal_integer actually is.

Universal_Integer is merely an integer type.

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