std::poisson_distribution<IntType>::poisson_distribution (3) - Linux Manuals

std::poisson_distribution<IntType>::poisson_distribution: std::poisson_distribution<IntType>::poisson_distribution


std::poisson_distribution<IntType>::poisson_distribution - std::poisson_distribution<IntType>::poisson_distribution


poisson_distribution() : poisson_distribution(1.0) {} (1) (since C++11)
explicit poisson_distribution( double mean ); (2) (since C++11)
explicit poisson_distribution( const param_type& params ); (3) (since C++11)

Constructs a new distribution object. (2) uses mean as the distribution parameter. (3) uses params as the distribution parameter.


mean - the μ distribution parameter (the mean of the distribution)
params - the distribution parameter set


Requires that 0 < mean.

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P0935R0 C++11 default constructor was explicit made implicit