Re: [Boost-bugs] [Boost C++ Libraries] #2228: signed overflow problem in weighted_sum on VC9.0

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2228: signed overflow problem in weighted_sum on VC9.0
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-08-19 18:02:37

#2228: signed overflow problem in weighted_sum on VC9.0
---------------------------+------------------------------------------------
  Reporter:  pavol_droba   |       Owner:  eric_niebler
      Type:  Bugs          |      Status:  closed      
 Milestone:  Boost 1.36.0  |   Component:  accumulator 
   Version:  Boost 1.36.0  |    Severity:  Problem     
Resolution:  invalid       |    Keywords:              
---------------------------+------------------------------------------------

Comment(by pavol_droba):

 I understand that the current solution is technically correct. However I
 think that conceptually it is not.

 An example: To calculate a weighted mean of signed integers, where weight
 represents sample cardinality, I would consider it quite natural to expect
 that the mean
 will be signed, since I'm accumulating signed integers. Even though the
 cardinality is natural (i.e. unsigned) number.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/2228#comment:2>
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