oneapi::mkl::rng::geometric

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 7/13/2023

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oneapi::mkl::rng::geometric

Generates geometrically distributed random values.

Description
API

Description

The oneapi::mkl::rng::geometric class object is used in the oneapi::mkl::rng::generate function to provide geometrically distributed random numbers with probability p of a single trial success, where p∈R; 0 < p < 1.

A geometrically distributed variate represents the number of independent Bernoulli trials preceding the first success. The probability of a single Bernoulli trial success is p.

The probability distribution is given by:

P(X = k) = p·(1 - p)^k, k∈ {0,1,2, … }.

The cumulative distribution function is as follows:

Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at https://www.intel.com/PerformanceIndex. Notice revision #20201201

API

Syntax

template<typename IntType = std::int32_t, typename Method = geometric_method::by_default>
class geometric {
public:
  using method_type = Method;
  using result_type = IntType;
  geometric(): geometric(0.5){}
  explicit geometric(float p);
  explicit geometric(const param_type& pt);
  float p() const;
  param_type param() const;
  void param(const param_type& pt);
};

Devices supported: CPU and GPU.

Include Files

oneapi/mkl/rng.hpp

Template Parameters

Name	Description
`typename IntType = std::int32_t`	Type of the produced values. The specific values are as follows: `std::int32_t` `std::uint32_t`
`typename Method = oneapi::mkl::rng:: geometric_method:: by_default`	Generation method. The specific values are as follows: `oneapi::mkl::rng::geometric_method::icdf` See brief descriptions of the methods in Distributions Template Parameter Method.

Name

Description

typename IntType = std::int32_t

Type of the produced values. The specific values are as follows:

std::int32_t

std::uint32_t

typename Method = oneapi::mkl::rng:: geometric_method:: by_default

Generation method. The specific values are as follows:

oneapi::mkl::rng::geometric_method::icdf

See brief descriptions of the methods in Distributions Template Parameter Method.

Input Parameters

Name	Type	Description
p	`float`	Success probability `p` of a trial.

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oneapi::mkl::rng::geometric

Description

API