Re: Compiler optimization and floating point operations

Jean-Marc Bourguet <jm@bourguet.org>
Thu, 24 Oct 2013 15:51:59 +0200

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From: Jean-Marc Bourguet <jm@bourguet.org>
Newsgroups: comp.compilers
Date: Thu, 24 Oct 2013 15:51:59 +0200
Organization: Guest of ProXad - France
References: 13-10-026 13-10-029
Keywords: arithmetic
Posted-Date: 24 Oct 2013 11:19:01 EDT

George Neuner <gneuner2@comcast.net> writes:


> [I think you mean they're not associative. I don't know any situations
> where a+b != b+a, but lots where a+(b+c) != (a+b)+c -John]


You forgot about NaN ;-) (but I agree associative was probably intended).


Yours,
--
Jean-Marc
[How are NaNs not commutative? -John]


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