Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
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.fi
    ,
    mkl_vsl.f90
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
Optimization Notice
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
This notice covers the following instruction sets: SSE2, SSE4.2, AVX2, AVX-512.
Input Parameters
Name
Type
Description
method
INTEGER, INTENT(IN)
Generation method; the specific values are as follows:
VSL_RNG_METHOD_UNIFORM_STD
VSL_RNG_METHOD_UNIFORM_STD_ACCURATE
Standard method.
stream
TYPE (VSL_STREAM_STATE), INTENT(IN)
Descriptor of the stream state structure.
n
INTEGER, INTENT(IN)
Number of random values to be generated.
a
DOUBLE PRECISION
for
vdrnguniform
REAL (KIND=4), INTENT(IN)
for
vsrnguniform
REAL (KIND=8), INTENT(IN)
for
vdrnguniform
Left bound
a
.
b
DOUBLE PRECISION
for
vdrnguniform
REAL (KIND=4), INTENT(IN)
for
vsrnguniform
REAL (KIND=8), INTENT(IN)
for
vdrnguniform
Right bound
b
.
Output Parameters
Name
Type
Description
r
DOUBLE PRECISION
for
vdrnguniform
REAL (KIND=4), INTENT(OUT)
for
vsrnguniform