Re: [Boost-bugs] [Boost C++ Libraries] #9596: "logical ‘and’ of mutually exclusive tests is always false" error in random/linear_congruential.hpp

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9596: "logical ‘and’ of mutually exclusive tests is always false" error in random/linear_congruential.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-10 23:14:56

#9596: "logical ‘and’ of mutually exclusive tests is always false" error in
random/linear_congruential.hpp
-------------------------------+---------------------------
  Reporter:  a0smucig@…        |      Owner:  no-maintainer
      Type:  Patches           |     Status:  new
 Milestone:  To Be Determined  |  Component:  random
   Version:  Boost 1.55.0      |   Severity:  Optimization
Resolution:                    |   Keywords:
-------------------------------+---------------------------

Comment (by steven_watanabe):

 The tests are mutually exclusive for unsigned types.  The problem is that
 the expression is always false for unsigned type, but is needed for signed
 types.  When I wrote it, using _x <= 0 && x != 0 was sufficient to avoid a
 warning, but apparently that's no longer the case.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9596#comment:1>
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