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Stores the parameters of the distribution.

struct param_type {
    typedef exponential_distribution<RealType> distribution_type;
    param_type(RealType lambda = 1.0);
    RealType lambda() const;
    bool operator==(const param_type& right) const;
    bool operator!=(const param_type& right) const;

Precondition: 0.0 < lambda

This structure can be passed to the distribution's class constructor at instantiation, to the param() member function to set the stored parameters of an existing distribution, and to operator() to be used in place of the stored parameters.

Header: <random>

Namespace: std

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