[Boost-bugs] [Boost C++ Libraries] #6939: pdf(weibull(shape, scale), 0) == 0 even if shape <= 1

Subject: [Boost-bugs] [Boost C++ Libraries] #6939: pdf(weibull(shape, scale), 0) == 0 even if shape <= 1
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-05-24 14:39:42

#6939: pdf(weibull(shape, scale), 0) == 0 even if shape <= 1
-------------------------------------------------------------+--------------
 Reporter:  Florian Schoppmann <Florian.Schoppmann@…>        |       Owner:  johnmaddock
     Type:  Bugs                                             |      Status:  new        
Milestone:  To Be Determined                                 |   Component:  math       
  Version:  Boost 1.49.0                                     |    Severity:  Problem    
 Keywords:                                                   |  
-------------------------------------------------------------+--------------
 If shape == 1, then we should have `pdf(weibull(shape, scale), 0) == 1`
 and if shape < 1, `cdf(weibull(shape, scale), 0)` should call
 `raise_overflow_error`.

 Example:
 {{{
 #include <boost/math/distributions/weibull.hpp>
 using namespace boost::math;
 int main() {
     std::cout << pdf(weibull(0.5), 0) << std::endl
      << pdf(weibull(1), 0) << std::endl;
 }
 }}}
 This prints:
 {{{
 0
 0
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6939>
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