Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 12/16/2022
Public

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Document Table of Contents

vsliNewAbstractStream

Creates and initializes an abstract random stream for integer arrays.

Syntax

status = vslinewabstractstream( stream, n, ibuf, icallback )

Include Files
  • mkl.fi, mkl_vsl.f90
Input Parameters

Name

Type

Description

n

INTEGER, INTENT(IN)

Size of the array ibuf

ibuf

INTEGER(KIND=4), INTENT(IN)

Array of n 32-bit integers

icallback

See Note below

Address of the callback function used for ibuf update

NOTE:

Format of the callback function in FORTRAN 77:

INTEGER FUNCTION IUPDATEFUNC( stream, n, ibuf, nmin, nmax, idx )
INTEGER*4 stream(2)
INTEGER n
INTEGER*4 ibuf(n)
INTEGER nmin
INTEGER nmax
INTEGER idx

Format of the callback function in Fortran 90:

INTEGER FUNCTION IUPDATEFUNC[C]( stream, n, ibuf, nmin, nmax, idx )
TYPE(VSL_STREAM_STATE),POINTER :: stream[reference]
INTEGER(KIND=4),INTENT(IN)     :: n[reference]
INTEGER(KIND=4),INTENT(OUT)    :: ibuf[reference](0:n-1)
INTEGER(KIND=4),INTENT(IN)     :: nmin[reference]
INTEGER(KIND=4),INTENT(IN)     :: nmax[reference]
INTEGER(KIND=4),INTENT(IN)     :: idx[reference]

The callback function returns the number of elements in the array actually updated by the function.Table icallback Callback Function Parameters gives the description of the callback function parameters.

icallback Callback Function Parameters

Parameters

Short Description

stream

Abstract random stream descriptor

n

Size of ibuf

ibuf

Array of random numbers associated with the stream stream

nmin

Minimal quantity of numbers to update

nmax

Maximal quantity of numbers that can be updated

idx

Position in cyclic buffer ibuf to start update 0idx<n.

Output Parameters

Name

Type

Description

stream

TYPE(VSL_STREAM_STATE), TINTENT(OUT)

Descriptor of the stream state structure

Description

The vsliNewAbstractStream function creates a new abstract stream and associates it with an integer array ibuf and your callback function icallback that is intended for updating of ibuf content.

Return Values
VSL_ERROR_OK, VSL_STATUS_OK

Indicates no error, execution is successful.

VSL_ERROR_BADARGS

Parameter n is not positive.

VSL_ERROR_MEM_FAILURE

System cannot allocate memory for stream.

VSL_ERROR_NULL_PTR

Either buffer or callback function parameter is a NULL pointer.