Developer Reference for Intel® oneAPI Math Kernel Library for C
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vRngBeta
Generates beta distributed random values.
Syntax
status = vsRngBeta( method, stream, n, r, p, q, a, beta );
status = vdRngBeta( method, stream, n, r, p, q, a, beta );
Include Files
- mkl.h
Input Parameters
| Name | Type | Description | 
|---|---|---|
| method | const MKL_INT | Generation method. The specific values are as follows: VSL_RNG_METHOD_BETA_CJAVSL_RNG_METHOD_BETA_CJA_ACCURATESee brief description of the method CJA in Table "Values of <method> in method parameter" | 
| stream | VSLStreamStatePtr | Pointer to the stream state structure | 
| n | const MKL_INT | Number of random values to be generated | 
| p | const float for vsRngBeta const double for vdRngBeta | Shape p | 
| q | const float for vsRngBeta const double for vdRngBeta | Shape q | 
| a | const float for vsRngBeta const double for vdRngBeta | Displacementa. | 
| beta | const float for vsRngBeta const double for vdRngBeta | Scalefactor β. | 
Output Parameters
| Name | Type | Description | 
|---|---|---|
| r | float* for vsRngBeta double* for vdRngBeta | Vector of n random numbers with beta distribution | 
Description
The vRngBeta function generates random numbers with beta distribution that has shape parameters p and q, displacement a, and scale parameter β, where p, q, a, and β∈R ; p > 0, q > 0, β > 0.
The probability density function is given by:
 
 
   where B(p, q) is the complete beta function.
The cumulative distribution function is as follows:
 
 
   
| Product and Performance Information | 
|---|
| Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201 | 
Return Values
- VSL_ERROR_OK, VSL_STATUS_OK
-  
     Indicates no error, execution is successful. 
- VSL_ERROR_NULL_PTR
-  
     stream is a NULL pointer. 
- VSL_RNG_ERROR_BAD_STREAM
-  
     stream is not a valid random stream. 
- VSL_RNG_ERROR_BAD_UPDATE
-  
     Callback function for an abstract BRNG returns an invalid number of updated entries in a buffer, that is, < 0 or > nmax. 
- VSL_RNG_ERROR_NO_NUMBERS
-  
     Callback function for an abstract BRNG returns 0 as the number of updated entries in a buffer. 
- VSL_RNG_ERROR_QRNG_PERIOD_ELAPSED
-  
     Period of the generator has been exceeded. 
- VSL_RNG_ERROR_NONDETERM_NRETRIES_EXCEEDED
-  
     Number of retries to generate a random number by using non-deterministic random number generator exceeds threshold. 
- VSL_RNG_ERROR_ARS5_NOT_SUPPORTED
-  
     ARS-5 random number generator is not supported on the CPU running the application.