chi_squared_distribution::operator()
Returns a random value.
template<class Engine>
result_type operator()(Engine& eng);
template<class Engine>
result_type operator()(Engine& eng,
const param_type& par0);
Parameters
eng
The random engine.par0
The parameter package used to return the random value.
Remarks
The first member operator uses the <random>eng as a source of uniformly distributed random integral values and returns floating-point values with each value x occurring with probability:
Pr(x) = x^(n / 2 - 1) * e^-(x / 2) / (gamma(n / 2) * 2^(n / 2))
The second member function behaves the same, except that it uses the parameters stored in par0.
Requirements
Header: <random>
Namespace: std