[Boost-bugs] [Boost C++ Libraries] #1489: BOOST_CHECK_CLOSE fails to compile with templated value type

Subject: [Boost-bugs] [Boost C++ Libraries] #1489: BOOST_CHECK_CLOSE fails to compile with templated value type
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-11-30 21:12:47

#1489: BOOST_CHECK_CLOSE fails to compile with templated value type
-------------------------------------------------+--------------------------
 Reporter:  Hugo Duncan <hugo_duncan_at_[hidden]>  |       Owner:  rogeeff
     Type:  Bugs                                 |      Status:  new    
Milestone:  To Be Determined                     |   Component:  test   
  Version:  Boost Development Trunk              |    Severity:  Problem
 Keywords:                                       |  
-------------------------------------------------+--------------------------
 I was wanting to check two boost::numeric::interval's for closeness, but
 find I get a compile error.  The below fails to compile, with the error
 messages shown.

 I believe this is because
    i) the comparison operator for interval is templated,
   ii) boost.test wraps one of the values with a readonly_property
 and therefore the template is not an exact match.  Changing the tolerance
 to an interval does not change anything.  This is with MSVC8 and with gcc
 3.4.4 on windows.

 Is this a bug, a missing feature - or am I misusing BOOST_CHECK_CLOSE ?



 c:\cygwin\home\duncan\boost\boost/test/floating_point_comparison.hpp(184)
 : error C2679: binary '<=' : no operator found which takes a right-hand
 operand of type 'const boost::unit_test::readonly_property<PropertyType>'
 (or there is no acceptable conversion)
          with
          [
              PropertyType=boost::numeric::interval<double>
          ]
 c:\cygwin\home\duncan\boost\boost/numeric/interval/interval.hpp(82):
 could be 'bool boost::numeric::interval<T>::operator <=(const
 boost::numeric::interval<T>::interval_holder &) const'
          with
          [
              T=double
          ]
 c:\cygwin\home\duncan\boost\boost/numeric/interval/interval.hpp(89):
 or 'bool boost::numeric::interval<T>::operator <=(const
 boost::numeric::interval<T>::number_holder &) const'
          with
          [
              T=double
          ]
          while trying to match the argument list
 '(boost::numeric::interval<T>, const
 boost::unit_test::readonly_property<PropertyType>)'
          with
          [
              T=double
          ]
          and
          [
              PropertyType=boost::numeric::interval<double>
          ]

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1489>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.