oneapi::mkl::rng::rayleigh

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 3/31/2021

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oneapi::mkl::rng::rayleigh

Generates Rayleigh distributed random values.

Description
API

Description

The oneapi::mkl::rng::rayleigh class object is used by the oneapi::mkl::rng::generate function to provide Rayleigh distributed random numbers with displacement (a) and scalefactor (b, β), where .

The Rayleigh distribution is a special case of the Weibull distribution, where the shape parameter α = 2.

The probability density function is given by:

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 RealType = float, typename Method = rayleigh_method::by_default>
class rayleigh {
public:
  using method_type = Method;
  using result_type = RealType;
  rayleigh(): rayleigh((RealType)0.0, (RealType)1.0){}
  explicit rayleigh(RealType a, RealType b);
  explicit rayleigh(const param_type& pt);
  RealType a() const;
  RealType b() const;
  param_type param() const;
  void param(const param_type& pt);
};

Devices supported: CPU and GPU.

Include Files

oneapi/mkl/rng.hpp

Template Parameters

typename RealType = float

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

float

double

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

Generation method. The specific values are as follows:

oneapi::mkl::rng::rayleigh_method::icdf

oneapi::mkl::rng::rayleigh_method::icdf_accurate

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

Input Parameters

Name	Type	Description
a	`RealType (float, double)`	Displacement `a`.
b	`RealType (float, double)`	Scalefactor `b`.

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oneapi::mkl::rng::rayleigh

Description

API