Re: [Boost-bugs] [Boost C++ Libraries] #4812: Bug in boost::math::special_functions::sign showing up in special_functions::bessel_jy()

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4812: Bug in boost::math::special_functions::sign showing up in special_functions::bessel_jy()
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-11-05 13:55:07

#4812: Bug in boost::math::special_functions::sign showing up in
special_functions::bessel_jy()
----------------------------------------------+-----------------------------
  Reporter:  peter zwart <PHZwart@…>          |       Owner:  johnmaddock                     
      Type:  Bugs                             |      Status:  new                             
 Milestone:  To Be Determined                 |   Component:  math                            
   Version:  Boost 1.45.0                     |    Severity:  Showstopper                     
Resolution:                                   |    Keywords:  sign sph_bessel special_function
----------------------------------------------+-----------------------------

Comment (by anonymous):

 >it returns 1.

 Then I'm confused as to why it's failing, are you in a position to debug

 boost::math::sign(-1.24911e-2468L);

 And figure out why it isn't returning -1?  The code is so simple it's hard
 to see how it could go wrong really and I still can't reproduce here...

 Thanks, John.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4812#comment:5>
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