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Groups > comp.compilers > #1013

Re: Compiler optimization and floating point operations

From Jean-Marc Bourguet <jm@bourguet.org>
Newsgroups comp.compilers
Subject Re: Compiler optimization and floating point operations
Date 2013-10-24 15:51 +0200
Organization Guest of ProXad - France
Message-ID <13-10-030@comp.compilers> (permalink)
References <13-10-026@comp.compilers> <13-10-029@comp.compilers>

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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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Thread

Compiler optimization and floating point operations Abid <abidmuslim@gmail.com> - 2013-10-23 13:47 -0700
  Re: Compiler optimization and floating point operations Cameron McInally <cameron.mcinally@nyu.edu> - 2013-10-23 22:55 -0400
  Re: Compiler optimization and floating point operations glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2013-10-24 02:56 +0000
  Re: Compiler optimization and floating point operations George Neuner <gneuner2@comcast.net> - 2013-10-24 07:41 -0400
    Re: Compiler optimization and floating point operations Jean-Marc Bourguet <jm@bourguet.org> - 2013-10-24 15:51 +0200
    Re: Compiler optimization and floating point operations "Steven G. Kargl" <sgk@troutmask.apl.washington.edu> - 2013-10-24 16:38 +0000
      Re: Compiler optimization and floating point operations christian.bau@cbau.wanadoo.co.uk - 2013-10-28 15:54 -0700
    Re: Compiler optimization and floating point operations George Neuner <gneuner2@comcast.net> - 2013-10-24 15:51 -0400
    Re: Compiler optimization and floating point operations glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2013-10-24 20:21 +0000
    Re: Compiler optimization and floating point operations christian.bau@cbau.wanadoo.co.uk - 2013-10-28 15:50 -0700
      Re: Compiler optimization and floating point operations Cameron McInally <cameron.mcinally@nyu.edu> - 2013-10-28 20:41 -0400

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