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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Problem Cross - Posted fron  Sci Crypt Crypto Group
Date: Mon, 05 Nov 2018 08:19:50 +0000
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Date: 2018-11-05T08:19:50+00:00
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Austin Obyrne <austin.obyrne@hotmail.com> writes:

> Having thought it through again for the umpteenth time I realise now
> that my problem is to do with integer overflow i.e. integers greater
> than 2^31.  I am using 32-bit computer architecture.

Not sure whether so old a compiler would support declaring 64-bit
integer as

   subtype Austins_Integer is Long_Long_Integer;

or possibly, to make it more explicit,

   type Austins_Integer is range -2 ** 63 .. 2 ** 63 - 1;