Re: [Boost-bugs] [Boost C++ Libraries] #10193: [Spirit.qi] real_parser is too strict with the exponent part

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10193: [Spirit.qi] real_parser is too strict with the exponent part
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-08-11 08:46:22

#10193: [Spirit.qi] real_parser is too strict with the exponent part
-------------------------------+----------------------
  Reporter:  anonymous         |      Owner:  djowel
      Type:  Bugs              |     Status:  reopened
 Milestone:  To Be Determined  |  Component:  spirit
   Version:  Boost 1.55.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+----------------------

Comment (by djowel):

 Sorry, you are right. OK, the problem is with the docs, not the
 implementation. The correct grammar according to the
 http://en.cppreference.com/w/cpp/language/floating_literal is

     (lit('e') | 'E') >> -(sign >> +digit)

 Seems there's a problem with grouping there.

 The second one consists of the following parts:
   nonempty sequence of decimal digits (defines significant)
   e or E followed with optional minus or plus sign and nonempty sequence
 of decimal digits (defines exponent)

 Are we in agreement?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10193#comment:5>
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