Re: [Boost-bugs] [Boost C++ Libraries] #6186: lexical_cast on vs2005 with wchar_t-

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6186: lexical_cast on vs2005 with wchar_t-
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-17 18:43:05

#6186: lexical_cast on vs2005 with wchar_t-
-------------------------------+--------------------------------------------
  Reporter:  anonymous         |       Owner:  apolukhin   
      Type:  Bugs              |      Status:  closed      
 Milestone:  To Be Determined  |   Component:  lexical_cast
   Version:  Boost 1.48.0      |    Severity:  Problem     
Resolution:  fixed             |    Keywords:              
-------------------------------+--------------------------------------------

Comment (by apolukhin):

 Read [http://www.boost.org/development/submissions.html Boost Library
 Submission Process].[[BR]]
 If you want to participate, I`m really exited about making boost::variant
 work with rvalues/boost::move. [[BR]]
 Also. there is a heavy math challenge in lexical_cast (implementing fast
 conversions to long doubles and doubles without precision loss):
 {{{
             /* We need a more accurate algorithm... We can not use current
 algorithm
              * with long doubles (and with doubles if
 sizeof(double)==sizeof(long double)).
              */
             long double result = std::pow(10.0L, pow_of_10) * mantissa;
             value = static_cast<T>( has_minus ?
 (boost::math::changesign)(result) : result);
 }}}
 If you want something more, read for a few weeks
 [http://www.boost.org/community/groups.html#main main developers mailing
 list] and try asking for some work there.[[BR]]
 [[BR]]
 By the way, can you give me some code example, when this warning appears
 "converter.hpp(166) : warning C4800: 'int' : forcing value to bool 'true'
 or 'false' (performance warning) "? [[BR]]
 [[BR]]
 Feel free to contact me and ask any questions. (My email can be found at
 [http://svn.boost.org/svn/boost/trunk/libs/maintainers.txt maintainers
 list] near the "conversion" library)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6186#comment:20>
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