gamma_distribution::alpha
Returns the alpha distribution parameter.
result_type alpha();
Remarks
The member function returns the stored value stored_alpha.
Example
// std_tr1__random__gamma_distribution_alpha.cpp
// compile with: /EHsc
#include <random>
#include <iostream>
typedef std::ranlux64_base_01 Myeng;
typedef std::gamma_distribution<double> Mydist;
int main()
{
Myeng eng;
Mydist dist(1.5);
Mydist::input_type engval = eng();
Mydist::result_type distval = dist(eng);
distval = distval; // to quiet "unused" warnings
engval = engval;
std::cout << "alpha == " << dist.alpha() << 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);
}
alpha == 1.5 a random value == 1.69867 a random value == 0.555659 a random value == 0.609713
Requirements
Header: <random>
Namespace: std