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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: _Type vs no _Type
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Date: Sat, 6 Nov 2010 12:35:46 +0100
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Date: 2010-11-06T12:35:45+01:00
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On Sat, 06 Nov 2010 12:00:38 +0100, Georg Bauhaus wrote:

> On 11/6/10 8:12 AM, Dmitry A. Kazakov wrote:
> 
>> Hmm, I would expect you arguing for
>>
>>     function "/" (Dividend : T; Divisor : T) return T;
>>
>> For commutative operations like "+" it becomes a bit difficult:
> 
> You aren't suggesting the computer-"+" is a commutative
> operation, are you?

I do. The implementation of "+" is not "strictly" commutative, but its
interface does not tell that. The implied, not stated contract, is that "+"
is indeed commutative allowing certain compiler optimizations. A numeric
expression denotes a set of results satisfying certain conditions (accuracy
constraints required by the ARM). Within these limits "+" is "weakly"
commutative.

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