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bernoulli_distribution::bernoulli_distribution

Constructs the distribution.

bernoulli_distribution(double p0 = 0.5);

p0

The p distribution parameter.

Precondition: 0.0 ≤ p0 && p0 ≤ 1.0

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

 

// std_tr1__random__bernoulli_distribution_construct.cpp 
// compile with: /EHsc 
#include <random> 
#include <iostream> 
 
typedef std::tr1::mt19937 Myeng; 
typedef std::tr1::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

Header: <random>

Namespace: std::tr1

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