public member function
<random>
| (1) | explicit student_t_distribution ( result_type n = 1.0 ); |
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| (2) | explicit student_t_distribution ( const param_type& parm ); |
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Construct Student T-distribution
Constructs a student_t_distribution object, adopting the distribution parameters specified either by n or by object parm.
Parameters
- n
- Degrees of freedom.
Its value shall be positive (n>0).
result_type is a member type that represents the type of the random numbers generated on each call to operator(). It is defined as an alias of the first class template parameter (RealType).
- parm
- An object representing the distribution's parameters, obtained by a call to member function param.
param_type is a member type.
Example
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// student_t_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::student_t_distribution<double> distribution (10.0);
std::cout << "some T-distributed(10.0) results:" << std::endl;
for (int i=0; i<5; ++i)
std::cout << distribution(generator) << std::endl;
return 0;
}
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Possible output:
some T-distributed(10.0) results:
2.47885
2.38749
-0.554628
0.0953787
0.0732851
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