std::chi_squared_distribution<RealType>::chi_squared_distribution
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                    < cpp | numeric | random | chi squared distribution
                    
                                                            
                    | chi_squared_distribution() : chi_squared_distribution(1.0) {} | (1) | (since C++11) | 
| explicit chi_squared_distribution( RealType n ); | (2) | (since C++11) | 
| explicit chi_squared_distribution( const param_type& params ); | (3) | (since C++11) | 
Constructs a new distribution object. (2) uses n as the distribution parameter. (3) uses params as the distribution parameter.
Parameters
| n | - | the n distribution parameter (degrees of freedom) | 
| params | - | the distribution parameter set | 
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior | 
|---|---|---|---|
| P0935R0 | C++11 | default constructor was explicit | made implicit |