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Date: Tue, 03 Feb 2004 09:06:52 -0500
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Subject: Re: In-Out Parameters for functions
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Date: 2004-02-03T09:06:52-05:00
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Dmitry A. Kazakov wrote:
 > + is commutative

Mathematics went beyond dogmatic statements like that many years ago.
Notice you didn't say that * is commutative. Very disingenuous.

> You want to fix the circumstances, I prefer to fix the code.

Once the circumstances are fixed, the code is no more broken
than if the operands were evaluated in sequential statements.

> The results are illegal, if different [*].

Can you point to where the ARM says so? I believe you are wrong.

> When a programmer writes: x:=a+b, the postcondition of that is:
> { x=a+b & x=b+a }

If I replace + with *, you would find no one agreeing with you if the
operands were matrices, for example.