explicit negative_binomial_distribution( IntType k = 1, double p = 0.5 );
(1) (since C++11)
explicit negative_binomial_distribution( const param_type& params );
(2) (since C++11)

Constructs a new distribution object. The first version uses k and p as the distribution parameters, the second version uses params as the distribution parameters.

[edit] Parameters

k - the k distribution parameter (number of trial failures)
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.

The default-constructed std::negative_binomial_distribution is equivalent to the default-constructed std::geometric_distribution.