A binomial_distribution random number distribution produces integer values i ≥ 0 distributed according to the discrete probability function P(i | t,p) = t i · pi · (1-p)t-i .
template<class IntType = int>
class binomial_distribution{
public:
// types
typedef IntType result_type;
typedef unspecified param_type;
// constructors and reset functions
explicit binomial_distribution(IntType t = 1, double p = 0.5);
explicit binomial_distribution(const param_type& parm);
void reset();
// generating functions
template<class URNG>
result_type operator()(URNG& g);
template<class URNG>
result_type operator()(URNG& g, const param_type& parm);
// property functions
IntType t() const;
double p() const;
param_type param() const;
void param(const param_type& parm);
result_type min() const;
result_type max() const;
};
explicit binomial_distribution(IntType t = 1, double p = 0.5);
Requires: 0 ≤ p ≤ 1 and 0 ≤ t .
Effects: Constructs a binomial_distribution object; t and p correspond to the respective parameters of the distribution.
Returns: The value of the t parameter with which the object was constructed.
Returns: The value of the p parameter with which the object was constructed.