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Showing content from https://timsong-cpp.github.io/cppwp/n4659/rand.dist.norm.t below:

[rand.dist.norm.t]

29 Numerics library [numerics] 29.6 Random number generation [rand] 29.6.8 Random number distribution class templates [rand.dist] 29.6.8.5 Normal distributions [rand.dist.norm] 29.6.8.5.6 Class template student_­t_­distribution [rand.dist.norm.t]

A student_­t_­distribution random number distribution produces random numbers x distributed according to the probability density function

p(x|n)=1nπΓ((n+1)/2)Γ(n/2)(1+x2n)(n+1)/2.

template<class RealType = double>
  class student_t_distribution {
  public:
        using result_type = RealType;
    using param_type  = unspecified;

        explicit student_t_distribution(RealType n = 1);
    explicit student_t_distribution(const param_type& parm);
    void reset();

        template<class URBG>
      result_type operator()(URBG& g);
    template<class URBG>
      result_type operator()(URBG& g, const param_type& parm);

        RealType n() const;
    param_type param() const;
    void param(const param_type& parm);
    result_type min() const;
    result_type max() const;
  };

explicit student_t_distribution(RealType n = 1);

Effects: Constructs a student_­t_­distribution object; n corresponds to the parameter of the distribution.

RealType n() const;

Returns: The value of the n parameter with which the object was constructed.


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