NAME

std::poisson_distribution::mean - std::poisson_distribution::mean

Synopsis

double mean() const; (since C++11)

Returns the μ parameter the distribution was constructed with. The parameter
defines mean number of occurrences of the event. The default value is 1.0.

Parameters

(none)

Return value

Floating point value identifying the μ distribution parameter.

See also

param gets or sets the distribution parameter object
(C++11) (public member function)