Developer Reference for Intel® oneAPI Math Kernel Library for C
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vRngGeometric
Generates geometrically distributed random values.
Syntax
status = viRngGeometric( method, stream, n, r, p );
Include Files
- mkl.h
 
Input Parameters
Name  |  
      Type  |  
      Description  |  
     
|---|---|---|
method  |  
      const MKL_INT  |  
      Generation method. The specific value is as follows: VSL_RNG_METHOD_GEOMETRIC_ICDF Inverse cumulative distribution function method.  |  
     
stream  |  
      VSLStreamStatePtr  |  
      Pointer to the stream state structure  |  
     
n  |  
      const MKL_INT  |  
      Number of random values to be generated  |  
     
p  |  
      const double  |  
      Success probability p of a trial  |  
     
Output Parameters
Name  |  
      Type  |  
      Description  |  
     
|---|---|---|
r  |  
      int*  |  
      Vector of n geometrically distributed random values  |  
     
Description
The vRngGeometric function generates 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 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.