Visible to Intel only — GUID: GUID-11419BCA-EA28-4902-A37E-17F1BEB515BD
Visible to Intel only — GUID: GUID-11419BCA-EA28-4902-A37E-17F1BEB515BD
oneapi::mkl::rng::device::poisson
Generates Poisson distributed random values.
Description
The oneapi::mkl::rng::device::poisson class object is used in the oneapi::mkl::rng::device::generate function to provide Poisson distributed random numbers with distribution parameter λ, where .
The probability distribution is given by:
![](/content/dam/docs/us/en/developer-reference-dpcpp/2023-1/C7D4D55A-72AB-4640-BD8B-898D7945AF9A-low.png)
.
The cumulative distribution function is as follows:
![](/content/dam/docs/us/en/developer-reference-dpcpp/2023-1/9AC440B0-0DDD-4D2C-A529-0929A2493C37-low.png)
API
Syntax
template<typename IntType, typename Method> class poisson { public: using method_type = Method; using result_type = IntType; poisson(): poisson(0.5){} explicit poisson(double lambda); explicit poisson(const param_type& pt); double lambda() const; param_type param() const; void param(const param_type& pt); };
Include Files
oneapi/mkl/rng/device.hpp
Template Parameters
Name |
Description |
---|---|
typename IntType |
Type of the produced values. The specific values are as follows: std::int32_t std::uint32_t |
typename Method |
Generation method. The specific values are as follows: oneapi::mkl::rng::device::poisson_method::devroye |
table-lookup method for small lambdas (
60)
Devroye’s method [Devroye] for medium lambdas (60
1000)
Gaussian approximation for huge lambdas (
1000)
Input Parameters
Name |
Type |
Description |
---|---|---|
lambda |
double |
Distribution parameter λ. |