Re: [Boost-bugs] [Boost C++ Libraries] #5095: incorrect results from hypergeometric pdf

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5095: incorrect results from hypergeometric pdf
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-01-19 17:26:05

#5095: incorrect results from hypergeometric pdf
------------------------------------------+---------------------------------
  Reporter:  David Koes <dkoes@…>         |       Owner:  johnmaddock
      Type:  Bugs                         |      Status:  new        
 Milestone:  To Be Determined             |   Component:  math       
   Version:  Boost 1.45.0                 |    Severity:  Problem    
Resolution:                               |    Keywords:             
------------------------------------------+---------------------------------

Comment (by David Koes <dkoes@…>):

 As a workaround, if the lgamma backup version of
 hypergeometric_pdf_lanczos_imp is used instead, correct results are
 obtained.

 In
 /usr/local/include/boost/math/distributions/detail/hypergeometric_pdf.hpp:
 414c414
 <       result = detail::hypergeometric_pdf_lanczos_imp(value_type(), x,
 r, n, N, evaluation_type(), forwarding_policy());
 ---
 >       result = detail::hypergeometric_pdf_lanczos_imp(value_type(), x,
 r, n, N, lanczos::undefined_lanczos(), forwarding_policy());

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5095#comment:1>
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