id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 13344,Noncentral chi-squared distribution with 0 degrees of freedom,Stéphane Laurent ,John Maddock,"Hello, Boost returns an error when we supply 0 for the degrees of freedom of chi-squared distribution: {{{ #include #include #include ""boost/math/distributions/non_central_chi_squared.hpp"" int main(){ std::cout << boost::math::cdf(boost::math::non_central_chi_squared(0, 1), 1); return 0; } }}} ''Error in function boost::math::non_central_chi_squared_distribution::non_central_chi_squared_distribution(double,double): Degrees of freedom argument is 0, but must be > 0 !'' However this distribution makes sense. It has a density.",Bugs,closed,To Be Determined,math,Boost 1.65.0,Problem,obsolete,,