[issue3167] math test fails on Solaris 10

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Nice reply from zal.  His conclusion:

> The short answer to your question is to use the cc -xlibmieee
> option (and not rely on errno in the case of log(-Inf)) if you
> would like to see results in the spirit of IEEE 754.

It sounds like using the -xlibmieee flag is the way to go.  (math_1 is 
already doing an excellent job of not relying on errno).

Could you try compiling with this flag to see whether it fixes the 
problem?  (Opening up the 'configure' file and adding the flag to 
BASECFLAGS might be the easiest way to do this; there may be easier 
ways.) If it does, I'll cook up a configure patch.

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