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.
1.0 as the distribution parameter.mean as the distribution parameter.params as the distribution parameter.| mean | - | the μ distribution parameter (the mean of the distribution) |
| params | - | the distribution parameter set |
Requires that 0 < mean.
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 |
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