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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: Are there any automatic tools to convert ada83 source into ada95?
Date: 1998/12/31
Message-ID: <wcciues2nat.fsf@world.std.com>#1/1
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Sender: bobduff@world.std.com (Robert A Duff)
References: <766l70$dh1$1@nnrp1.dejanews.com>
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Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1998-12-31T00:00:00+00:00
List-Id: <comp.lang.ada>

I wrote:

>     X := abs(X);
> 
> According to the Ada 83 RM, the above statement might raise either C_E
> or P_E.  Any code that tries to distinguish the two is, as Robert said,
> "dubious".
> 
> In Ada 95, it raises C_E (and P_E is just a renaming of C_E).
> 
> A good style in Ada 83 was to always pair the two: "when C_E | P_E =>
> ...".  The Ada 95 rules are carefully crafted to make that idiom
> still be legal.

Oops, I meant N_E (Numeric_Error), not Program_Error above.  Thanks to
Art Evans for pointing that out.

- Bob
-- 
Change robert to bob to get my real email address.  Sorry.