std::normal_distribution< _RealType >(3cxx) | std::normal_distribution< _RealType >(3cxx) |
NAME¶
std::normal_distribution< _RealType > -SYNOPSIS¶
Public Types¶
typedef _RealType input_type
Public Member Functions¶
_RealType mean () const
Friends¶
template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT,
Detailed Description¶
template<typename _RealType = double>class std::normal_distribution< _RealType >¶
A normal continuous distribution for random numbers.Constructor & Destructor Documentation¶
template<typename _RealType = double> std::normal_distribution< _RealType >:: normal_distribution (const result_type &__mean = result_type(0), const result_type &__sigma = result_type(1)) [inline], [explicit]¶
Constructs a normal distribution with parameters $ mean $ and $ gma $. Definition at line 2244 of file tr1_impl/random.Member Function Documentation¶
template<typename _RealType = double> _RealType std::normal_distribution< _RealType >::mean () const [inline]¶
Gets the mean of the distribution. Definition at line 2255 of file tr1_impl/random.template<typename _RealType > template<class _UniformRandomNumberGenerator > normal_distribution< _RealType >::result_type std::normal_distribution< _RealType >::operator() (_UniformRandomNumberGenerator &__urng)¶
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 1390 of file random.tcc. References std::log(), and std::sqrt().template<typename _RealType = double> void std::normal_distribution< _RealType >::reset () [inline]¶
Resets the distribution. Definition at line 2269 of file tr1_impl/random.template<typename _RealType = double> _RealType std::normal_distribution< _RealType >::sigma () const [inline]¶
Gets the $ gma $ of the distribution. Definition at line 2262 of file tr1_impl/random.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 normal_distribution< _RealType1 > &__x) [friend]¶
Inserts a normal_distribution random number distribution __x into the output stream __os. Parameters:__os An output stream.
__x A normal_distribution random number distribution.
Returns:
The output stream with the state of __x
inserted or in an error state.
template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> ( std::basic_istream< _CharT, _Traits > &__is, normal_distribution< _RealType1 > &__x) [friend]¶
Extracts a normal_distribution random number distribution __x from the input stream __is. Parameters:__is An input stream.
__x A normal_distribution random number generator engine.
Returns:
The input stream with __x extracted or in an
error state.
Author¶
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