normal_distribution::mean
Returns the mean distribution parameter.
result_type mean() const;
Remarks
The member function returns the stored value stored_mean.
Example
// std_tr1__random__normal_distribution_mean.cpp
// compile with: /EHsc
#include <random>
#include <iostream>
typedef std::ranlux64_base_01 Myeng;
typedef std::normal_distribution<double> Mydist;
int main()
{
Myeng eng;
Mydist dist(1.5, 2.0);
Mydist::input_type engval = eng();
Mydist::result_type distval = dist(eng);
distval = distval; // to quiet "unused" warnings
engval = engval;
std::cout << "mean == " << dist.mean() << std::endl;
std::cout << "sigma == " << dist.sigma() << 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);
}
mean == 1.5 sigma == 2 a random value == 0.0275648 a random value == 0.0738393 a random value == 4.47125
Requirements
Header: <random>
Namespace: std