std::poisson_distribution::poisson_distribution - cppreference.com (original) (raw)
| 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.
Uses 1.0 as the distribution parameter.
Uses mean as the distribution parameter.
Uses params as the distribution parameter.
[edit] Parameters
| mean | - | the μ distribution parameter (the mean of the distribution) |
|---|---|---|
| params | - | the distribution parameter set |
[edit] Notes
Requires that 0 < mean.
[edit] 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 |