[PowerPC64] Correct IBM long double frexpl

Alan Modra amodra@gmail.com
Tue Mar 25 13:24:00 GMT 2014


On Tue, Mar 25, 2014 at 12:16:51PM +0000, Joseph S. Myers wrote:
> On Tue, 25 Mar 2014, Alan Modra wrote:
> 
> > Besides fixing the bugzilla, this also fixes corner-cases where the high
> > and low double differ greatly in magnitude, and handles a denormal
> > input without resorting to a fp rescale.
> 
> Cases where the high and low double differ greatly in magnitude are bug 
> 16619 (such test inputs can't be represented in libm-test.inc, but you 
> should see improvements in test results for clog10l; it was large errors 
> from clog10l that drew my attention to problems with such cases).

Yes, I forgot to mention the test improvement with the patch
submission.  16 clog10l tests now no longer fail, and 8 tests now have
only 1 ulp error.

-- 
Alan Modra
Australia Development Lab, IBM



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