std::chi_squared_distribution< _RealType > - A chi_squared_distribution random number distribution.
Contents
Detailed Description
template<typename_RealType=double>
class std::chi_squared_distribution< _RealType >"A chi_squared_distribution random number distribution.
The formula for the normal probability mass function is $p(x|n) = ac{x^{(n/2) - 1}e^{-x/2}}{Gamma(n/2)
2^{n/2}}$
Since
C++11
Member Function Documentation
template<typename_RealType=double>result_typestd::chi_squared_distribution<_RealType>::max()const[inline]
Returns the least upper bound value of the distribution.
References std::numeric_limits<_Tp>::max().
template<typename_RealType=double>result_typestd::chi_squared_distribution<_RealType>::min()const[inline]
Returns the greatest lower bound value of the distribution.
template<typename_RealType=double>template<typename_UniformRandomNumberGenerator>result_typestd::chi_squared_distribution<_RealType>::operator()(_UniformRandomNumberGenerator&__urng)[inline]
Generating functions.
template<typename_RealType=double>param_typestd::chi_squared_distribution<_RealType>::param()const[inline]
Returns the parameter set of the distribution.
template<typename_RealType=double>voidstd::chi_squared_distribution<_RealType>::param(constparam_type&__param)[inline]
Sets the parameter set of the distribution.
Parameters__param The new parameter set of the distribution.
References std::gamma_distribution<_RealType>::param().
template<typename_RealType=double>voidstd::chi_squared_distribution<_RealType>::reset()[inline]
Resets the distribution state.
References std::gamma_distribution<_RealType>::reset().
Member Typedef Documentation
template<typename_RealType=double>typedef_RealTypestd::chi_squared_distribution<_RealType>::result_type
The type of the range of the distribution.
Name
std::chi_squared_distribution< _RealType > - A chi_squared_distribution random number distribution.
Synopsis
#include <random>
Classes
struct param_typePublicTypestypedef _RealType result_typePublicMemberFunctionschi_squared_distribution (_RealType __n)
chi_squared_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)
template<typename_UniformRandomNumberGenerator > void__generate (result_type *__f, result_type *__t,
_UniformRandomNumberGenerator &__urng, const param_type &__p)
result_typemax () const
Returns the least upper bound value of the distribution.
result_typemin () const
Returns the greatest lower bound value of the distribution.
_RealType n () const
template<typename_UniformRandomNumberGenerator > result_typeoperator() (_UniformRandomNumberGenerator
&__urng)
Generating functions.
template<typename_UniformRandomNumberGenerator > result_typeoperator() (_UniformRandomNumberGenerator
&__urng, const param_type &__p)
param_typeparam () const
Returns the parameter set of the distribution.
voidparam (const param_type &__param)
Sets the parameter set of the distribution.
voidreset ()
Resets the distribution state.
Friends
template<typename_RealType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits >
& operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::chi_squared_distribution<
_RealType1 > &__x)
Inserts a chi_squared_distribution random number distribution __x into the output stream __os.
bool operator== (const chi_squared_distribution &__d1, const chi_squared_distribution &__d2)
Return true if two Chi-squared distributions have the same parameters and the sequences that would be
generated are equal.
template<typename_RealType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits >
& operator>> (std::basic_istream< _CharT, _Traits > &__is, std::chi_squared_distribution< _RealType1
> &__x)
Extracts a chi_squared_distribution random number distribution __x from the input stream __is.
