vRngUniform Continuous Distribution Generators

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 4/28/2026

Version

Public

vRngUniform Continuous Distribution Generators

Generates random numbers with uniform distribution.

Syntax

status = vsRngUniform ( method , stream , n , r , a , b );

status = vdRngUniform ( method , stream , n , r , a , b );

Include Files

mkl.h

Description

vsRngUniform vdRngUniform The vRngUniform function generates random numbers uniformly distributed over the interval [a, b) , where a, b are the left and right bounds of the interval, respectively, and a, b∈R ; a < b .

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 www.Intel.com/PerformanceIndex . Notice revision #20201201

Input Parameters

Name	Type	Description
`method`	`const MKL_INT`	Generation method; the specific values are as follows: VSL_RNG_METHOD_UNIFORM_STD VSL_RNG_METHOD_UNIFORM_STD_ACCURATE Standard method.
`stream`	`VSLStreamStatePtr`	Pointer to the stream state structure
`n`	`const MKL_INT`	Number of random values to be generated.
`a`	`const float` for `vsRngUniformconst double` for `vdRngUniform`	Left bound `a` .
`b`	`const float` for `vsRngUniformconst double` for `vdRngUniform`	Right bound `b` .

Output Parameters

Name	Type	Description
`r`	`float` for `vsRngUniformdouble` for `vdRngUniform`	Vector of `n` random numbers uniformly distributed over the interval `[a,b)`

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.

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Developer Reference for Intel® oneAPI Math Kernel Library for C

vRngUniform Continuous Distribution Generators

Syntax

Include Files

Description

Input Parameters

Output Parameters

Return Values