A gamma continuous distribution for random numbers. More...

A gamma continuous distribution for random numbers.
The formula for the gamma probability density function is:
Definition at line 2350 of file random.h.
| typedef _RealType std::gamma_distribution< _RealType >::result_type |
| std::gamma_distribution< _RealType >::gamma_distribution | ( | _RealType | __alpha_val = _RealType(1), |
|
| _RealType | __beta_val = _RealType(1) | |||
| ) | [inline, explicit] |
| _RealType std::gamma_distribution< _RealType >::alpha | ( | ) | const [inline] |
| _RealType std::gamma_distribution< _RealType >::beta | ( | ) | const [inline] |
| result_type std::gamma_distribution< _RealType >::max | ( | ) | const [inline] |
Returns the least upper bound value of the distribution.
Definition at line 2459 of file random.h.
Referenced by std::gamma_distribution< result_type >::max().
| result_type std::gamma_distribution< _RealType >::min | ( | ) | const [inline] |
| result_type std::gamma_distribution< _RealType >::operator() | ( | _UniformRandomNumberGenerator & | __urng | ) | [inline] |
Generating functions.
Definition at line 2467 of file random.h.
Referenced by std::gamma_distribution< result_type >::operator()().
| gamma_distribution< _RealType >::result_type std::gamma_distribution< _RealType >::operator() | ( | _UniformRandomNumberGenerator & | __urng, | |
| const param_type & | __param | |||
| ) |
Marsaglia, G. and Tsang, W. W. "A Simple Method for Generating Gamma Variables" ACM Transactions on Mathematical Software, 26, 3, 363-372, 2000.
Definition at line 1975 of file random.tcc.
References std::log(), and std::pow().
| void std::gamma_distribution< _RealType >::param | ( | const param_type & | __param | ) | [inline] |
| param_type std::gamma_distribution< _RealType >::param | ( | ) | const [inline] |
Returns the parameter set of the distribution.
Definition at line 2437 of file random.h.
Referenced by std::gamma_distribution< result_type >::operator()().
| void std::gamma_distribution< _RealType >::reset | ( | ) | [inline] |
Resets the distribution state.
Definition at line 2416 of file random.h.
Referenced by std::negative_binomial_distribution< _IntType >::reset(), std::student_t_distribution< _RealType >::reset(), std::fisher_f_distribution< _RealType >::reset(), and std::chi_squared_distribution< _RealType >::reset().
| std::basic_ostream<_CharT, _Traits>& operator<< | ( | std::basic_ostream< _CharT, _Traits > & | , | |
| const std::gamma_distribution< _RealType1 > & | ||||
| ) | [friend] |
Inserts a gamma_distribution random number distribution __x into the output stream __os.
| __os | An output stream. | |
| __x | A gamma_distribution random number distribution. |
__x inserted or in an error state. | bool operator== | ( | const std::gamma_distribution< _RealType1 > & | __d1, | |
| const std::gamma_distribution< _RealType1 > & | __d2 | |||
| ) | [friend] |
| std::basic_istream<_CharT, _Traits>& operator>> | ( | std::basic_istream< _CharT, _Traits > & | , | |
| std::gamma_distribution< _RealType1 > & | ||||
| ) | [friend] |
Extracts a gamma_distribution random number distribution __x from the input stream __is.
| __is | An input stream. | |
| __x | A gamma_distribution random number generator engine. |
__x extracted or in an error state.
1.7.1