Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

Contents

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
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:
Equation
The cumulative distribution function is as follows:
Equation
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
vsRngUniform
const double
 for
vdRngUniform
Left bound
a
.
b
const float
for
vsRngUniform
const double
 for
vdRngUniform
Right bound
b
.
Output Parameters
Name
Type
Description
r
float*
 for
vsRngUniform
double*
 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.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.