Re: [Boost-bugs] [Boost C++ Libraries] #9811: boost/boost/chrono/duration.hpp:355:56: error: call to non-constexpr function 'static std::numeric_limits<float>::_Ty std::numeric_limits<float>::max()' /home/zosun/input_service/inputservices-core-service/other/boost/boost/chrono/duration.hpp: In static member function 'static constexpr double boost::chrono::detail::chrono_numeric_limits<double, true>::lowest()':

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9811: boost/boost/chrono/duration.hpp:355:56: error: call to non-constexpr function 'static std::numeric_limits<float>::_Ty std::numeric_limits<float>::max()' /home/zosun/input_service/inputservices-core-service/other/boost/boost/chrono/duration.hpp: In static member function 'static constexpr double boost::chrono::detail::chrono_numeric_limits<double, true>::lowest()':
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-04-19 07:04:51

#9811: boost/boost/chrono/duration.hpp:355:56: error: call to non-constexpr
function 'static std::numeric_limits<float>::_Ty
std::numeric_limits<float>::max()' /home/zosun/input_service/inputservices-
core-service/other/boost/boost/chrono/duration.hpp: In static member
function 'static constexpr double
boost::chrono::detail::chrono_numeric_limits<double, true>::lowest()':
-------------------------------+---------------------
  Reporter:  szj087@…          |      Owner:  viboes
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  chrono
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+---------------------

Comment (by viboes):

 An alternative could be to define BOOST_CHRONO_LIB_CONSTEXPR if not
 already defined


 {{{
 #ifndef BOOST_CHRONO_LIB_CONSTEXPR
 #if defined( BOOST_NO_CXX11_NUMERIC_LIMITS )
 #define BOOST_CHRONO_LIB_CONSTEXPR
 #elif defined(_LIBCPP_VERSION) &&  !defined(_LIBCPP_CONSTEXPR)
   #define BOOST_CHRONO_LIB_CONSTEXPR
 #else
   #define BOOST_CHRONO_LIB_CONSTEXPR BOOST_CONSTEXPR
 #endif
 #endif
 }}}


 Now the user could define BOOST_CHRONO_LIB_CONSTEXPR if its c++ std
 library doesn't supports constexpr for numeric_limits. What do you think?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9811#comment:5>
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