| std::chi_squared_distribution< _RealType >(3cxx) | std::chi_squared_distribution< _RealType >(3cxx) |
std::chi_squared_distribution< _RealType > - A chi_squared_distribution random number distribution.
#include <random.h>
struct param_type
typedef _RealType result_type
chi_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_type max () const
Returns the least upper bound value of the distribution. result_type
min () const
Returns the greatest lower bound value of the distribution. _RealType n
() const
template<typename _UniformRandomNumberGenerator >
result_type operator() (_UniformRandomNumberGenerator
&__urng)
Generating functions. template<typename
_UniformRandomNumberGenerator > result_type
operator() (_UniformRandomNumberGenerator &__urng,
const param_type &__p)
param_type param () const
Returns the parameter set of the distribution. void param
(const param_type &__param)
Sets the parameter set of the distribution. void reset ()
Resets the distribution state.
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.
class std::chi_squared_distribution< _RealType >"A chi_squared_distribution random number distribution.
The formula for the normal probability mass function is $p(x|n) = ac{x^{(n/2) - 1}e^{-x/2}}{Gamma(n/2) 2^{n/2}}$
Definition at line 2624 of file random.h.
The type of the range of the distribution.
Definition at line 2631 of file random.h.
Definition at line 2661 of file random.h.
Definition at line 2664 of file random.h.
Definition at line 2669 of file random.h.
Definition at line 2742 of file random.h.
Definition at line 2749 of file random.h.
Definition at line 2758 of file random.h.
Definition at line 2764 of file random.h.
Returns the least upper bound value of the distribution.
Definition at line 2718 of file random.h.
References std::numeric_limits< _Tp >::max().
Returns the greatest lower bound value of the distribution.
Definition at line 2711 of file random.h.
Definition at line 2684 of file random.h.
Generating functions.
Definition at line 2726 of file random.h.
Definition at line 2731 of file random.h.
Returns the parameter set of the distribution.
Definition at line 2691 of file random.h.
Sets the parameter set of the distribution.
Parameters
Definition at line 2699 of file random.h.
References std::gamma_distribution< _RealType >::param().
Resets the distribution state.
Definition at line 2677 of file random.h.
References std::gamma_distribution< _RealType >::reset().
Inserts a chi_squared_distribution random number distribution __x into the output stream __os.
Parameters
Returns
Return true if two Chi-squared distributions have the same parameters and the sequences that would be generated are equal.
Definition at line 2777 of file random.h.
Extracts a chi_squared_distribution random number distribution __x from the input stream __is.
Parameters
Returns
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