std::negative_binomial_distribution::negative_binomial_distribution - cppreference.com (original) (raw)
| negative_binomial_distribution() : negative_binomial_distribution(1) {} | (1) | (since C++11) |
|---|---|---|
| explicit negative_binomial_distribution( IntType k, double p = 0.5 ); | (2) | (since C++11) |
| explicit negative_binomial_distribution( const param_type& params ); | (3) | (since C++11) |
Constructs a new distribution object.
Uses k and p as the distribution parameters.
Uses params as the distribution parameters.
[edit] Parameters
| k | - | the k distribution parameter (number of trial successes) |
|---|---|---|
| p | - | the p distribution parameter (probability of a trial generating true) |
| params | - | the distribution parameter set |
[edit] Notes
Requires that 0 < p ≤ 1 and 0 < k.
If p == 1, subsequent calls to the operator() overload that does not accept a param_type object will cause undefined behavior.
The default-constructed std::negative_binomial_distribution is equivalent to the default-constructed std::geometric_distribution.
[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 |