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From: Gautier <gautier.demontmollin@maths.unine.ch>
Subject: Re: double-length integers/fixed
Date: 2000/02/25
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Date: 2000-02-25T00:00:00+00:00
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Roger Barnett wrote:

> Does anyone know of a package supporting double-length integer
> (and ideally fixed point) types ?
> 
> [ i.e. to provide support for a 2n-bit integer/fixed types using a compiler
>        which uses n-bits for its largest integer/fixed types ]
> 
> I'm looking at a couple of the arbitrary-size support packages, but
> I'd be interested to know if there are any more specific alternatives.

With a package providing arbitrary-size package you can define a fixed-size
subtype :-) E.g.

  NB_Blocs_maximal: constant:= 4;
  SUBTYPE ENTIER IS Multi_precision_integers.multi_int( NB_Blocs_maximal );

Some links for multi-precision @ http://members.xoom.com/gnatlist/

G.