https://svn.boost.org/trac10/ticket/767 <pre class="wiki">Is there an extra "/_mean" in the equation for _nsigma on line 104 of lognormal_distribution.hpp? i.e. shouldn't it be: _nsigma = sqrt(log(_sigma*_sigma/_mean+result_type (1))); instead of: _nsigma = sqrt(log (_sigma*_sigma/_mean/_mean+result_type(1))); ?? Thanks for the great lib, John Eddy (jpeddy@sandia.gov) </pre> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/767 Trac 1.4.3 jmaurer Wed, 01 Nov 2006 23:06:24 GMT https://svn.boost.org/trac10/ticket/767#comment:1 https://svn.boost.org/trac10/ticket/767#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">assigned</span> → <span class="trac-field-new">closed</span> </li> </ul> <pre class="wiki">Logged In: YES user_id=53943 I believe it's correct as implemented, i.e. divide by the square of the mean. Do you have a pointer to some documentation or other implementation that states otherwise? If so, please reopen the bug report and I'll have another look. </pre> Ticket