Re: [Boost-bugs] [Boost C++ Libraries] #7879: Optimize equality comparison

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7879: Optimize equality comparison
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-01-12 11:08:59

#7879: Optimize equality comparison
---------------------------------------------------+------------------------
  Reporter:  Stepan Podoskin <stepik-777@…>        |       Owner:  johnmaddock   
      Type:  Feature Requests                      |      Status:  new           
 Milestone:  To Be Determined                      |   Component:  multiprecision
   Version:  Boost 1.53.0                          |    Severity:  Optimization  
Resolution:                                        |    Keywords:                
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Comment (by johnmaddock):

 You're correct of course, in fact rational_adapter is needlessly slow
 because of it's dependence on Boost.Rational which often performs a lot of
 unnecessary copying.

 I really need to rewrite rational_adapter not to use Boost.Rational at
 all.

 BTW the front end does have the ability to optimize comparisons when a
 full compare is expensive, but since we can't access the numerator and
 denominator of Boost.Rational without copying, it's unlikely to help so
 much as it should.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7879#comment:3>
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