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

explicit exponential_distribution( RealType lambda ); | (2) | (since C++11) |

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

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

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

as the distribution parameter.

lambda | - | the λ distribution parameter (the rate parameter) |

params | - | the distribution parameter set |

Requires that 0 < lambda.

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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