Re: [Boost-bugs] [Boost C++ Libraries] #9802: It seems as if integer division is being returned as a floating point

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9802: It seems as if integer division is being returned as a floating point
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-21 22:31:01

#9802: It seems as if integer division is being returned as a floating point
-------------------------------+----------------------------
  Reporter:  ajgibson@…        |      Owner:  johnmaddock
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  multiprecision
   Version:  Boost 1.55.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+----------------------------

Comment (by steven_watanabe):

 This is happening because the expression template system is re-associating
 the operations in number::do_multiplies.

 {{{
 #!c++
    template <class Exp>
    void do_multiplies(const Exp& e, const detail::divides&)
    {
       typedef typename Exp::left_type left_type;
       typedef typename Exp::right_type right_type;
       do_multiplies(e.left(), typename left_type::tag_type());
       do_divide(e.right(), typename right_type::tag_type());
    }
 }}}

 Note how this effectively turns ... * (a / b) into ... * a / b.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9802#comment:2>
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