[Boost-bugs] [Boost C++ Libraries] #6571: lexical_case<double>(someString) does not recognize IEEE exceptions

Subject: [Boost-bugs] [Boost C++ Libraries] #6571: lexical_case<double>(someString) does not recognize IEEE exceptions
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-02-17 16:30:41

#6571: lexical_case<double>(someString) does not recognize IEEE exceptions
----------------------------------------------------+-----------------------
 Reporter:  Chromatix <mhazadmanesh2009@…>          |       Owner:  apolukhin   
     Type:  Bugs                                    |      Status:  new         
Milestone:  To Be Determined                        |   Component:  lexical_cast
  Version:  Boost 1.48.0                            |    Severity:  Problem     
 Keywords:                                          |  
----------------------------------------------------+-----------------------
 When using lexical_cast to cast a floating point value (float, double,
 long double), lexical_cast will generate the proper IEEE floating-point
 exception string.
 But when converting the string representation to the real floating point
 value, lexical_cast doesn't recognize the special values and throws
 bad_lexical_cast. Look at this example trying to work with double
 undefined values. The same problem exists for infinity (and probably for
 other special values that I'm not aware of).

 {{{
 #include <boost/lexical_cast.hpp>
 int main()
 {
     boost::lexical_cast<string>(sqrt(-1.0)); //OK, returns "-1.#IND"
     boost::lexical_cast<double>("-1.#IND");  //bad_lexical_cast !!!
     return 0;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6571>
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