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

A normal_distribution random number distribution produces random numbers xdistributed according to the probability density function in Formula 29.13.

The distribution parameters μ and σare also known as this distribution's meanand standard deviation.

namespace std { template<class RealType = double> class normal_distribution { public: using result_type = RealType;using param_type = unspecified; normal_distribution() : normal_distribution(0.0) {} explicit normal_distribution(RealType mean, RealType stddev = 1.0);explicit normal_distribution(const param_type& parm);void reset();friend bool operator==(const normal_distribution& x, const normal_distribution& y);template<class URBG> result_type operator()(URBG& g);template<class URBG> result_type operator()(URBG& g, const param_type& parm); RealType mean() const; RealType stddev() const; param_type param() const;void param(const param_type& parm); result_type min() const; result_type max() const;template<class charT, class traits> friend basic_ostream<charT, traits>& operator<<(basic_ostream<charT, traits>& os, const normal_distribution& x);template<class charT, class traits> friend basic_istream<charT, traits>& operator>>(basic_istream<charT, traits>& is, normal_distribution& x);};}