binomial_distribution::binomial_distribution
Constructs the distribution.
binomial_distribution(result_type t0 = 1,
const RealType& p0 = RealType(0.5));
explicit binomial_distribution(const param_type& par0);
Parameters
t0
The t distribution parameter.p0
The p distribution parameter.par0
The parameter package used to construct the distribution.
Remarks
Precondition: 0.0 <= t0 && 0.0 <= p0 && p0 <= 1.0
The first constructor constructs an object whose stored value stored_p holds the value p0 and whose stored value stored_t holds the value t0.
The second constructor constructs an object whose stored parameters are initialized from par0.
Example
// std_tr1__random__binomial_distribution_construct.cpp
// compile with: /EHsc
#include <random>
#include <iostream>
typedef std::mt19937 Myeng;
typedef std::binomial_distribution<int, double> Mydist;
int main()
{
Myeng eng;
Mydist dist(2, 0.6);
Mydist::input_type engval = eng();
Mydist::result_type distval = dist(eng);
distval = distval; // to quiet "unused" warnings
engval = engval;
std::cout << "p == " << dist.p() << std::endl;
std::cout << "t == " << dist.t() << std::endl;
dist.reset(); // discard any cached values
std::cout << "a random value == " << dist(eng) << std::endl;
std::cout << "a random value == " << dist(eng) << std::endl;
std::cout << "a random value == " << dist(eng) << std::endl;
return (0);
}
p == 0.6 t == 2 a random value == 1 a random value == 0 a random value == 1
Requirements
Header: <random>
Namespace: std