bernoulli_distribution::bernoulli_distribution

Constructs the distribution.

bernoulli_distribution(double p0 = 0.5);
explicit bernoulli_distribution(const param_type& par0);

Parameters

• p0
  The p distribution parameter.

• par0
  The parameter package used to construct the distribution.

Remarks

Precondition: 0.0 ≤ p0 && p0 ≤ 1.0

The first constructor constructs an object whose stored value stored_p holds the value p0.

The second constructor constructs an object whose stored parameters are initialized from par0.

Example

// std_tr1__random__bernoulli_distribution_construct.cpp 
// compile with: /EHsc 
#include <random> 
#include <iostream> 
 
typedef std::mt19937 Myeng; 
typedef std::bernoulli_distribution Mydist; 
int main() 
    { 
    Myeng eng; 
    Mydist dist(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; 
 
    dist.reset(); // discard any cached values 
    std::cout << "a random value == " << std::boolalpha 
        << dist(eng) << std::endl; 
    std::cout << "a random value == " << std::boolalpha 
        << dist(eng) << std::endl; 
    std::cout << "a random value == " << std::boolalpha 
        << dist(eng) << std::endl; 
 
    return (0); 
    } 
 

p == 0.6
a random value == false
a random value == false
a random value == true

Requirements

Header: <random>

Namespace: std

See Also

Reference

<random>

bernoulli_distribution Class