24 Numerics library [numerics]

24.7 Random number generation [rand]

24.7.8 Random number distribution class templates [rand.dist]

24.7.8.5 Normal distributions [rand.dist.norm]

24.7.8.5.5 Class template fisher_­f_­distribution [rand.dist.norm.f]

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

template<class RealType = double>
  class fisher_f_distribution {
  public:
    // types
    using result_type = RealType;
    using param_type  = unspecified;

    // constructor and reset functions
    fisher_f_distribution() : fisher_f_distribution(1) {}
    explicit fisher_f_distribution(RealType m, RealType n = 1);
    explicit fisher_f_distribution(const param_type& parm);
    void reset();

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

    // property functions
    RealType m() const;
    RealType n() const;
    param_type param() const;
    void param(const param_type& parm);
    result_type min() const;
    result_type max() const;
  };
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explicit fisher_f_distribution(RealType m, RealType n = 1);
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Requires: and .
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Effects: Constructs a fisher_­f_­distribution object; m and n correspond to the respective parameters of the distribution.
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RealType m() const;
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Returns: The value of the m parameter with which the object was constructed.
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RealType n() const;
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Returns: The value of the n parameter with which the object was constructed.