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lognormal_distribution::operator()

Returns a random value.

template<class Engine>
    result_type operator()(Engine& eng);
template<class Engine>
    result_type operator()(Engine& eng,
        const param_type& par0);

Parameters

  • eng
    The random engine.

  • par0
    The parameter package used to return the random value.

Remarks

The first member operator uses the engine eng as a source of uniformly distributed random integral values and returns floating-point values with each value x occurring with probability:

Pr(x) = 1 / (s * x * √(2 * pi)) * e^-((ln(x) - m)² / (2 * x²))

The second member function behaves the same, except that it uses the parameters stored in par0.

Requirements

Header: <random>

Namespace: std

See Also

Reference

<random>

lognormal_distribution Class

Other Resources

<random> Members