Test for errno setting in more pole error cases

[Andreas Jaeger]

On 05/16/2013 09:24 PM, Joseph S. Myers wrote:
> On pole errors (exact infinity as result for finite inputs), (real)
> libm functions should raise the divide-by-zero exception and set errno
> to ERANGE.  This patch makes libm-test.inc test more systematically
> for the errno setting, except for the cases where there are known bugs
> filed about it being missing.  Tested x86_64 and x86.

Thanks, this is ok,

Andreas
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