gamma_distribution() : gamma_distribution(1.0) {} | (1) | (since C++11) |

explicit gamma_distribution( RealType alpha, RealType beta = 1.0 ); | (2) | (since C++11) |

explicit gamma_distribution( const param_type& params ); | (3) | (since C++11) |

Constructs a new distribution object. (2) uses `alpha`

and `beta`

as the distribution parameters. (3) uses `params`

as the distribution parameters.

alpha | - | the α distribution parameter (shape) |

beta | - | the β distribution parameter (scale) |

params | - | the distribution parameter set |

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 |

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