Re: [Boost-bugs] [Boost C++ Libraries] #8621: erf function gives wrong results with pgcpp - PGI 10.4

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8621: erf function gives wrong results with pgcpp - PGI 10.4
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-07 18:08:05

#8621: erf function gives wrong results with pgcpp - PGI 10.4
-------------------------------------------------+-------------------------
  Reporter:  Jacques Desfosses                   |      Owner:  johnmaddock
  <jacques.desfosses@…>                          |     Status:  new
      Type:  Bugs                                |  Component:  math
 Milestone:  To Be Determined                    |   Severity:  Problem
   Version:  Boost 1.53.0                        |   Keywords:  erf pgi
Resolution:                                      |
-------------------------------------------------+-------------------------

Comment (by johnmaddock):

 Thanks for the extra information, I'm attaching an updated version of
 boost/math/special_functions/erf.hpp which prints some more debugging
 info.  Can you give it a try and report back the output?  The last few
 lines should be:

 {{{
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:177 53-bit
 precision erf_imp called
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:269 Y =
 0.40593576431274414
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:270 P[0] =
 -0.098090592216281233
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:271 Q[0] = 1
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:273 result =
 0.427583576155807
 d:\data\boost\trunk\boost\math\special_functions\erf.hpp:275 result =
 0.15729920705028513
 }}}

 Thanks, John.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8621#comment:6>
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