Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

?larnd

Returns a random real number from a uniform or normal distribution.

Syntax

res = slarnd
(
idist
,
iseed
)
res = dlarnd
(
idist
,
iseed
)
res = clarnd
(
idist
,
iseed
)
res = zlarnd
(
idist
,
iseed
)
Include Files
  • mkl.fi
Description
The routine
?larnd
returns a random number from a uniform or normal distribution.
Input Parameters
idist
INTEGER
.
Specifies the distribution of the random numbers. For
slarnd
and
dlanrd
:
= 1: uniform (0,1)
= 2: uniform (-1,1)
= 3: normal (0,1).
For
clarnd
and
zlanrd
:
= 1: real and imaginary parts each uniform (0,1)
= 2: real and imaginary parts each uniform (-1,1)
= 3: real and imaginary parts each normal (0,1)
= 4: uniformly distributed on the disc abs(z) ≤ 1
= 5: uniformly distributed on the circle abs(z) = 1
iseed
INTEGER
.
Array, size 4.
On entry, the seed of the random number generator. The array elements must be between 0 and 4095, and
iseed
(4)
must be odd.
Output Parameters
iseed
INTEGER
.
On exit, the seed is updated.
res
REAL
for slarnd,
DOUBLE PRECISION
for dlarnd,
COMPLEX
for clarnd,
DOUBLE COMPLEX
for zlarnd,
Random number.

Product and Performance Information

1

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