26 Numerics library [numerics]

A geometric_distribution random number distribution produces integer values i ≥ 0 distributed according to the discrete probability function P(i | p) = p · (1-p)ⁱ .

template<class IntType = int>
 class geometric_distribution{
public:
 // types
 using result_type = IntType;
 using param_type  = unspecified;

 // constructors and reset functions
 explicit geometric_distribution(double p = 0.5);
 explicit geometric_distribution(const param_type& parm);
 void reset();

 // generating functions
 template<class URBG>
   result_type operator()(URBG& g);
 template<class URBG>
   result_type operator()(URBG& g, const param_type& parm);

 // property functions
 double p() const;
 param_type param() const;
 void param(const param_type& parm);
 result_type min() const;
 result_type max() const;
 };

explicit geometric_distribution(double p = 0.5);