[Boost-bugs] [Boost C++ Libraries] #13343: erf(NaN) and erfc(NaN) do not return NaN

Subject: [Boost-bugs] [Boost C++ Libraries] #13343: erf(NaN) and erfc(NaN) do not return NaN
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-12-14 16:49:32

#13343: erf(NaN) and erfc(NaN) do not return NaN
-----------------------------------------------+--------------------------
 Reporter:  Stéphane Laurent <laurent_step@…>  |      Owner:  John Maddock
     Type:  Bugs                               |     Status:  new
Milestone:  To Be Determined                   |  Component:  math
  Version:  Boost 1.65.0                       |   Severity:  Problem
 Keywords:                                     |
-----------------------------------------------+--------------------------
 Hello,

  It is expected that erf(NaN) and erfc(NaN) are NaN, but they are not:

 {{{
 #include <iostream>
 #include <cmath>
 #include "boost/math/special_functions/erf.hpp"

 int main(){
     std::cout << boost::math::erf(nan("")) << "\n";
     std::cout << boost::math::erfc(nan("")) << "\n";
     return 0;
 }
 }}}

 Output:
 {{{
 1
 0
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13343>
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