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From: John Maddock (john_at_[hidden])
Date: 2006-03-03 13:01:43

> I added the needed flag to the my local configuration just today. It's
> -ieee and needed to enforce IEEE conforming math operations. It's
> never
> been part of the basic toolset because usually the IEEE conformance
> of the CPU itself is good enough, and using this flags may incur a
> significant performance penalty. So I would recommend not to add it
> to the basic toolset.
> Strictly speaking it should be there for all math relevant boost
> libraries which depend on IEEE conforming math, but I always thoughr
> that anyone
> using this libraries on Alpha CPUs will know about the pitfalls.

I suspect the issue is that numeric_limits<T>::has_infinity is true, so the
test attempts to verify that infinities are correctly handled, but in
practice infinities trap without the -ieee flag. Is there a macro that
tells you when infinities are correctly handled?


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