Mark Dickinson <dicki...@gmail.com> added the comment:

Progress report:  I've had a response, and fix, from David Gay for the first 2 
bugs (Stefan's original bug and the incorrect subnormal result);  I'm still 
arguing with him about a 3rd one (not reported here; there's some possibly 
incorrect code in bigcomp that probably never actually gets called).  I 
reported the 4th bug (the incorrect rounding for values near 1) to him today.  
In the mean time, here's bug number 5, found by eyeballing the bigcomp code 
until it surrendered.  :-)

>>> 1000000000000000000000000000000000000000e-16
1e+23
>>> 10000000000000000000000000000000000000000e-17
1.0000000000000001e+23

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue7632>
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