std::poisson_distribution::mean (3) Linux Manual Page

std::poisson_distribution<IntType>::mean – std::poisson_distribution<IntType>::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

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