From: Greg Go <ruby-forum@...>
Date: 2008-01-10T13:24:39+09:00
Subject: Re: DateTime new_offset unexpected results

Dirk Traulsen wrote:
> Hi Greg!
> 
> Am 8 Jan 2008 um 6:05 hat Greg Go geschrieben:
> 
>> @jd.to_s #=> 2008-03-09T13:24:59+00:00
>> @ld.to_s #=> 2008-03-09T06:24:59-06:00
>>                                 ^^^^^^
>>                                 !!!!!!
>> 
>> It's my understanding that 13:24:59 offset by -6 hours should result
>> in 
>> 7:24:59, not 6:24:59. The @ld instance seems to be confused?
> 
> It looks like the reason could be the error that I found:
> 
> http://rubyforge.org/tracker/?func=detail&atid=1698&aid=14540&
> group_id=426
> 
> It is a rounding error inside Numeric#divmod, which I found while
> inquiring a similar error in date. This bug was confirmed for 1.8.6 and
> is fixed (for future versions). If you compile Ruby yourself, this
> patch could fix your problem too.
> 
> Hope this helps
> Dirk

Dirk:

Building ruby myself is a little outside my comfort zone. In my opinion, 
one of the major strengths of interpreted languages is that I can avoid 
the compilation process, which I find to be tedious and difficult.

Some questions:
Is the bug fix included in 1.9.0?

If not, is there any way at all to work around the problem? I've tried a 
number of things, but nothing seems to help.


Thanks!
Greg
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