NAME¶

std::normal_distribution< _RealType > -

SYNOPSIS¶

Classes¶

struct param_type

Public Types¶

typedef _RealType result_type

Public Member Functions¶

normal_distribution (result_type __mean=result_type(0), result_type __stddev= result_type(1)) normal_distribution (const param_type &__p) result_type max () const _RealType mean () const result_type min () const template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng) template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng, const param_type &__p) param_type param () const void param (const param_type &__param) void reset () _RealType stddev () const

Friends¶

template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::normal_distribution< _RealType1 > &__x)" template<typename _RealType1 > bool operator== (const std::normal_distribution< _RealType1 > &__d1, const std::normal_distribution< _RealType1 > &__d2) template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::normal_distribution< _RealType1 > &__x)"

Detailed Description¶

template<typename _RealType = double>class std::normal_distribution< _RealType >¶

A normal continuous distribution for random numbers. The formula for the normal probability density function is Definition at line 1980 of file random.h.

Member Typedef Documentation¶

template<typename _RealType = double> typedef _RealType std::normal_distribution< _RealType >:: result_type¶

The type of the range of the distribution. Definition at line 1983 of file random.h.

Constructor & Destructor Documentation¶

template<typename _RealType = double> std::normal_distribution< _RealType >:: normal_distribution ( result_type__mean = result_type(0), result_type__stddev = result_type(1) ) [inline], [explicit]¶

Constructs a normal distribution with parameters $mean$ and standard deviation. Definition at line 2025 of file random.h.

Member Function Documentation¶

template<typename _RealType = double> result_type std::normal_distribution< _RealType >::max () const [inline]¶

Returns the least upper bound value of the distribution. Definition at line 2082 of file random.h.

template<typename _RealType = double> _RealType std::normal_distribution< _RealType >::mean () const [inline]¶

Returns the mean of the distribution. Definition at line 2046 of file random.h.

template<typename _RealType = double> result_type std::normal_distribution< _RealType >::min () const [inline]¶

Returns the greatest lower bound value of the distribution. Definition at line 2075 of file random.h.

template<typename _RealType = double> template<typename _UniformRandomNumberGenerator > result_type std::normal_distribution< _RealType >::operator() (_UniformRandomNumberGenerator &__urng) [inline]¶

Generating functions. Definition at line 2090 of file random.h. Referenced by std::normal_distribution< result_type >::operator()().

template<typename _RealType > template<typename _UniformRandomNumberGenerator > normal_distribution< _RealType >:: result_type std::normal_distribution< _RealType >::operator() (_UniformRandomNumberGenerator &__urng, const param_type &__param)¶

Polar method due to Marsaglia. Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. V, Sect. 4.4. Definition at line 1677 of file random.tcc. References std::log(), and std::sqrt().

template<typename _RealType = double> param_type std::normal_distribution< _RealType >::param () const [inline]¶

Returns the parameter set of the distribution. Definition at line 2060 of file random.h. Referenced by std::normal_distribution< result_type >::operator()().

template<typename _RealType = double> void std::normal_distribution< _RealType >::param (const param_type &__param) [inline]¶

Sets the parameter set of the distribution. Parameters: Definition at line 2068 of file random.h.

template<typename _RealType = double> void std::normal_distribution< _RealType >::reset () [inline]¶

Resets the distribution state. Definition at line 2039 of file random.h. Referenced by std::lognormal_distribution< _RealType >::reset(), std::gamma_distribution< result_type >::reset(), std::student_t_distribution< _RealType >::reset(), std::binomial_distribution< _IntType >::reset(), and std::poisson_distribution< _IntType >::reset().

template<typename _RealType = double> _RealType std::normal_distribution< _RealType >::stddev () const [inline]¶

Returns the standard deviation of the distribution. Definition at line 2053 of file random.h.

Friends And Related Function Documentation¶

template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream<_CharT, _Traits>& operator<< ( std::basic_ostream< _CharT, _Traits > &__os, const std::normal_distribution< _RealType1 > &__x) [friend]¶

Inserts a normal_distribution random number distribution __x into the output stream __os. Parameters: Returns:

template<typename _RealType = double> template<typename _RealType1 > bool operator== (const std::normal_distribution< _RealType1 > &__d1, const std::normal_distribution< _RealType1 > &__d2) [friend]¶

Return true if two normal distributions have the same parameters and the sequences that would be generated are equal.

template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> ( std::basic_istream< _CharT, _Traits > &__is, std::normal_distribution< _RealType1 > &__x) [friend]¶

Extracts a normal_distribution random number distribution __x from the input stream __is. Parameters: Returns:

Author¶

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