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libstdc++
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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) | |
| template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > | |
| void | __generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng) |
| template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > | |
| void | __generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng, const param_type &__p) |
| template<typename _UniformRandomNumberGenerator > | |
| void | __generate (result_type *__f, result_type *__t, _UniformRandomNumberGenerator &__urng, 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) |
A normal continuous distribution for random numbers.
The formula for the normal probability density function is
| typedef _RealType std::normal_distribution< _RealType >::result_type |
| std::normal_distribution< _RealType >::normal_distribution | ( | result_type | __mean = result_type(0), |
| result_type | __stddev = result_type(1) |
||
| ) | [inline, explicit] |
| result_type std::normal_distribution< _RealType >::max | ( | ) | const [inline] |
Returns the least upper bound value of the distribution.
Definition at line 2022 of file random.h.
Referenced by std::normal_distribution< result_type >::max().
| _RealType std::normal_distribution< _RealType >::mean | ( | ) | const [inline] |
| result_type std::normal_distribution< _RealType >::min | ( | ) | const [inline] |
| result_type std::normal_distribution< _RealType >::operator() | ( | _UniformRandomNumberGenerator & | __urng | ) | [inline] |
Generating functions.
Definition at line 2030 of file random.h.
Referenced by std::normal_distribution< result_type >::operator()().
| 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 1783 of file bits/random.tcc.
References std::log(), and std::sqrt().
| param_type std::normal_distribution< _RealType >::param | ( | ) | const [inline] |
| void std::normal_distribution< _RealType >::param | ( | const param_type & | __param | ) | [inline] |
| void std::normal_distribution< _RealType >::reset | ( | ) | [inline] |
Resets the distribution state.
Definition at line 1979 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().
| _RealType std::normal_distribution< _RealType >::stddev | ( | ) | const [inline] |
| 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.
| __os | An output stream. |
| __x | A normal_distribution random number distribution. |
__x inserted or in an error state. | 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.
| 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.
| __is | An input stream. |
| __x | A normal_distribution random number generator engine. |
__x extracted or in an error state.