std::geometric_distribution<IntType>:: geometric_distribution

From cppreference.com
geometric_distribution ( ) : geometric_distribution ( 0.5 ) { }
(1) (since C++11)
explicit geometric_distribution ( double p ) ;
(2) (since C++11)
explicit geometric_distribution ( const param_type & params ) ;
(3) (since C++11)

Constructs a new distribution object.

2) Uses p as the distribution parameter.
3) Uses params as the distribution parameter.

Parameters

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

Notes

Requires that 0 < p < 1 .

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