explicit bernoulli_distribution( double p = 0.5 );
(1) (since C++11)
explicit bernoulli_distribution( const param_type& params );
(2) (since C++11)

Constructs new distribution object. The first version uses p as the distribution parameter, the second version uses params as the distribution parameter.

[edit] Parameters

p - the p distribution parameter (probability of generating true)
params - the distribution parameter set