[rand.dist.norm.lognormal] (original) (raw)

26 Numerics library [numerics]

26.6 Random number generation [rand]

26.6.8 Random number distribution class templates [rand.dist]

26.6.8.5 Normal distributions [rand.dist.norm]

26.6.8.5.2 Class template lognormal_distribution [rand.dist.norm.lognormal]

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

template class lognormal_distribution { public:

using result_type = RealType;
using param_type  = unspecified;


lognormal_distribution() : lognormal_distribution(0.0) {}
explicit lognormal_distribution(RealType m, RealType s = 1.0);
explicit lognormal_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 m() const;
RealType s() const;
param_type param() const;
void param(const param_type& parm);
result_type min() const;
result_type max() const;

};

explicit lognormal_distribution(RealType m, RealType s = 1.0);

Remarks: m and scorrespond to the respective parameters of the distribution.

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