Re: [Boost-bugs] [Boost C++ Libraries] #6171: nonconforming behavior of inverse functions on branch cuts

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6171: nonconforming behavior of inverse functions on branch cuts
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-12 08:48:57

#6171: nonconforming behavior of inverse functions on branch cuts
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  Reporter:  Richard B. Kreckel <kreckel@…>         |       Owner:  johnmaddock
      Type:  Bugs                                   |      Status:  new        
 Milestone:  To Be Determined                       |   Component:  math       
   Version:  Boost 1.48.0                           |    Severity:  Problem    
Resolution:                                         |    Keywords:             
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Comment (by Richard B. Kreckel <kreckel@…>):

 Reading my report again, I appear to have quoted the wrong section of the
 standard. The one that applies is the ''first'' paragraph in [7.3.3] (not
 the second): "''For implementations with a signed zero (including all IEC
 60559 implementations) that follow the specifications of annex G, the sign
 of zero distinguishes one side of a cut from another so the function is
 continuous (except for format limitations) as the cut is approached from
 either side.''" I apologize for the confusion. But anyway: the patch I
 attached accomplishes exactly that and is correct. Could somebody, please,
 apply it?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6171#comment:1>
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