poisson_distribution Class
Generates a Poisson distribution.
template<class IntType = int,
class RealType = double>
class poisson_distribution {
public:
typedef T1 input_type;
typedef IntType result_type;
struct param_type;
explicit poisson_distribution(RealType mean0 = RealType(1.0));
explicit poisson_distribution(const param_type& par0);
RealType mean() const;
param_type param() const;
void param(const param_type& par0);
result_type min() const;
result_type max() const;
void reset();
template<class Engine>
result_type operator()(Engine& eng);
template<class Engine>
result_type operator()(Engine& eng,
const param_type& par0);
private:
RealType stored_mean; // exposition only
};
Parameters
IntType
The integer result type.RealType
The floating-point engine value type.
Remarks
The template class describes a distribution that produces values of a user-specified integral type with a Poisson distribution.
Requirements
Header: <random>
Namespace: std
See Also
Reference
poisson_distribution::operator()
poisson_distribution::poisson_distribution
poisson_distribution::param_type