What is acceptable for -ffast-math? (Was: associative law incombine)

[Wolfgang Bangerth]

Tim Hollebeek wrote:
> Rewriting the programmers program in such a way that he gets
> significantly less accuracy than he could reasonably expect is just
> silly.

Of course it is, but that is not the point that is being discussed: nobody
proposed doing these transformations at -O2. If you don't want these
transformations, then don't switch on -fsomething. But if, for some
certainly valid reason you don't want to use these transformations, why
shouldn't other people have valid reasons to request them?

Regards
  Wolfgang


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Wolfgang Bangerth          email: wolfgang.bangerth@iwr.uni-heidelberg.de
                             www: http://gaia.iwr.uni-heidelberg.de/~wolf