public member function
<random>
std::extreme_value_distribution::operator() (1)template<class URNG>result_type operator()(URNG& g);(2)
template<class URNG>result_type operator()(URNG& g, const param_type& parm);
Generate random number
Returns a new random number that follows the distribution's parameters associated to the object (version 1) or those specified by parm (version 2).The generator object (g) supplies uniformly-distributed random integers through its operator() member function. The extreme_value_distribution object transforms the values obtained this way so that successive calls to this member function with the same arguments produce floating-point values that follow a type I extreme value distribution with the appropriate parameters.
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// extreme_value_distribution example
#include <iostream>
#include <chrono>
#include <random>
int main()
{
// construct a trivial random generator engine from a time-based seed:
unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
std::default_random_engine generator (seed);
std::extreme_value_distribution<double> distribution (0.0,1.0);
std::cout << "some extreme value-distributed(0.0,1.0) results:" << std::endl;
for (int i=0; i<10; ++i)
std::cout << distribution(generator) << std::endl;
return 0;
}some extreme value-distributed(0.0,1.0) results: -0.553171 3.9703 0.621033 -1.37539 0.214059 -1.841 1.3908 0.156335 -0.874502 -0.58788
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