[Boost-bugs] [Boost C++ Libraries] #11364: Multiprecision exclusive OR operator (^) gives incorrect results

Subject: [Boost-bugs] [Boost C++ Libraries] #11364: Multiprecision exclusive OR operator (^) gives incorrect results
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-05-31 21:01:53

#11364: Multiprecision exclusive OR operator (^) gives incorrect results
----------------------------------------+----------------------------
 Reporter:  Graham Clemow <boostbug@…>  |      Owner:  johnmaddock
     Type:  Bugs                        |     Status:  new
Milestone:  To Be Determined            |  Component:  multiprecision
  Version:  Boost Development Trunk     |   Severity:  Problem
 Keywords:                              |
----------------------------------------+----------------------------
 When using multiprecision types such as int128_t the exclusive OR of any
 pair of values with opposite sign which differ by exactly 2 to the power
 32 gives an incorrect zero result. So in the attached example c is
 incorrect and d is correct.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11364>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.