# std::geometric_distribution<IntType>::geometric_distribution

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< cpp‎ | numeric‎ | random‎ | geometric distribution

geometric_distribution() : geometric_distribution(0.5) {} | (1) | (since C++11)
explicit geometric_distribution( double p ); | (2) | (since C++11)
explicit geometric_distribution( const param_type& params ); | (3) | (since C++11)

Constructs a new distribution object. (2) uses `p` as the distribution parameter. (3) uses `params` as the distribution parameter.

### Parameters

p | - | the p distribution parameter (probability of a trial generating true)
params | - | the distribution parameter set

### Notes

Requires that 0 < p < 1

### 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

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