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

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6571: lexical_case<float>(someString) does not recognize IEEE exceptions
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-02-26 09:15:55

#6571: lexical_case<float>(someString) does not recognize IEEE exceptions
-----------------------------------------------------+----------------------
  Reporter:  Chromatix <mhazadmanesh2009@…>          |       Owner:  apolukhin   
      Type:  Bugs                                    |      Status:  assigned    
 Milestone:  To Be Determined                        |   Component:  lexical_cast
   Version:  Boost 1.48.0                            |    Severity:  Problem     
Resolution:                                          |    Keywords:              
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Comment (by apolukhin):

 There is a formal specification for Not-A-Number strings in C. According
 to standard strtod, strtof, and strtold, scanf, sscanf and fscanf
 functions must parse NaN like that:
 {{{
 The expected form of the subject sequence is an optional plus or minus
 sign, then one of
 the following:
 — INF or INFINITY, ignoring case
 — NAN or NAN(n-char-sequenceopt), ignoring case in the NAN part, where:
 ...
 }}}
 C++ stream operators use those functions for conversion. [[BR]]
 [[BR]]
 I`ll add your questions to the lexical_cast documentation (FAQ section).

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6571#comment:8>
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