[Boost-bugs] [Boost C++ Libraries] #10179: wrong check on the Log Normal position parameter

Subject: [Boost-bugs] [Boost C++ Libraries] #10179: wrong check on the Log Normal position parameter
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-07-06 17:56:44

#10179: wrong check on the Log Normal position parameter
-------------------------------+-------------------------
 Reporter:  cristian.rabiti@…  |      Owner:  johnmaddock
     Type:  Bugs               |     Status:  new
Milestone:  To Be Determined   |  Component:  math
  Version:  Boost 1.54.0       |   Severity:  Problem
 Keywords:  lognormal          |
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 In the Log normal there is a chaco that does not allow to use negative
 numbers for mu (in the manual reference page it is know as position)
 For the moment I would refer to it as mu. Mu is the mean value of the
 log(x) and should be therefore between ]-inf,inf] since the log is defined
 between ]0,inf]. The problem highlights when we are seeking to represent a
 random variable which logarithm is normal distributed with mean negative.
 BTW even in the web page of the manual there are example with mu negative:
 http://www.boost.org/doc/libs/1_35_0/libs/math/doc/sf_and_dist/html/math_toolkit/dist/dist_ref/dists/lognormal_dist.html

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/10179>
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