[Python-checkins] CVS: python/nondist/sandbox/datetime datetime.py,1.37,1.38 test_datetime.py,1.23,1.24

[M.-A. Lemburg]

Tim Peters wrote:
> 
> Update of /cvsroot/python/python/nondist/sandbox/datetime
> 
> 2. Not so shallow.  When the tzoffsets didn't match, it reverted to
>    comparing timestamps, but an IEEE double doesn't have enough
>    precision to avoid mapping distinct datetimes onto the same timestamp.
>    It takes about 38 bits to distinguish the individual seconds across
>    10000 years, leaving only about 53-38 = 15 bits to distinguish the
>    microseconds.  As a result, non-equal datetimes could compare equal,
>    especially for years near MAXYEAR.

Funny, how you guys run into the same problems I had at the 
time ;-)

-- 
Marc-Andre Lemburg
CEO eGenix.com Software GmbH
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