NAME¶

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

Synopsis¶

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.

1) Uses 1.0 as the distribution parameter.
2) Uses mean as the distribution parameter.
3) Uses params as the distribution parameter.

Parameters¶

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

Notes¶

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