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From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Lost in translation (with SPARK user rules)
Date: Sun, 30 May 2010 11:46:45 +0200
Organization: Ada At Home
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Date: 2010-05-30T11:46:45+02:00
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Le Sun, 30 May 2010 11:30:29 +0200, Phil Thornley  =

<phil.jpthornley@googlemail.com> a =E9crit:
>
> I would guess that the Simplifier manages to match 2**Y to 256 (by
> instantiating Y with 8), but not X**Y.
>
> Cheers,
>
> Phil
That would be a bit more than just matching so, this is a seed of solvin=
g.

-- =

There is even better than a pragma Assert: a SPARK --# check.
--# check C and WhoKnowWhat and YouKnowWho;
--# assert Ada;
--  i.e. forget about previous premises which leads to conclusion
--  and start with new conclusion as premise.