Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 3/31/2023
Public

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Document Table of Contents

vslConvExecX/vslCorrExecX

Computes convolution or correlation for multidimensional case with the fixed first operand vector.

Syntax

status = vslsconvexecx(task, y, ystride, z, zstride)

status = vsldconvexecx(task, y, ystride, z, zstride)

status = vslcconvexecx(task, y, ystride, z, zstride)

status = vslzconvexecx(task, y, ystride, z, zstride)

status = vslscorrexecx(task, y, ystride, z, zstride)

status = vsldcorrexecx(task, y, ystride, z, zstride)

status = vslccorrexecx(task, y, ystride, z, zstride)

status = vslzcorrexecx(task, y, ystride, z, zstride)

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

Name

Type

Description

task

INTEGER*4 task(2) for vslscorrexecx, vsldcorrexecx, vslccorrexecx, vslzcorrexecx

TYPE(VSL_CONV_TASK) for vslsconvexecx, vsldconvexecx, vslcconvexecx, vslzconvexecx

TYPE(VSL_CORR_TASK) for vslscorrexecx, vsldcorrexecx, vslccorrexecx, vslzcorrexecx

VSLCorrTaskPtr for vslsCorrExecX, vsldCorrExecX, vslcCorrExecX, vslzCorrExecX

Pointer to the task descriptor.

x ,y

REAL*8 for vsldconvexecx and vsldcorrexecx,

COMPLEX*8 forvslcconvexecx and vslccorrexecx,

COMPLEX*16 forvslzconvexecx and vslzcorrexecx

REAL(KIND=4), DIMENSION(*) for vslsconvexecx and vslscorrexecx,

REAL(KIND=8), DIMENSION(*) for vsldconvexecx and vsldcorrexecx,

COMPLEX(KIND=4), DIMENSION (*) forvslcconvexecx and vslccorrexecx,

COMPLEX(KIND=8), DIMENSION (*) for vslzconvexecx and vslzcorrexecx

Pointer to array containing input data (for the second operand vector). See Data Allocation for more information.

ystride ,zstride

INTEGER, DIMENSION (*)

Strides for input and output data. For more information, see stride parameters.

Output Parameters

Name

Type

Description

z

REAL*8 for vsldconvexecx and vsldcorrexecx,

COMPLEX*8 forvslcconvexecx and vslccorrexecx,

COMPLEX*16 forvslzconvexecx and vslzcorrexecx

REAL(KIND=4), DIMENSION(*) for vslsconvexecx and vslscorrexecx,

REAL(KIND=8), DIMENSION(*) for vsldconvexecx and vsldcorrexecx,

COMPLEX(KIND=4), DIMENSION (*) forvslcconvexecx and vslccorrexecx,

COMPLEX(KIND=8), DIMENSION (*) for vslzconvexecx and vslzcorrexecx

Pointer to the array that stores output data. See Data Allocation for more information.

status

INTEGER

Set to VSL_STATUS_OK if the task is executed successfully or set to non-zero error code otherwise.

Description

Each of the vslConvExecX/vslCorrExecX routines computes convolution or correlation of the data provided by the arrays x and y and then stores the results in the array z. These routines represent a special version of the operation, which assumes that the first operand vector was set on the task construction stage and the task object keeps the pointer to the array x.

Parameters of the operation are read from the task descriptor created previously by a corresponding vslConvNewTaskX/vslCorrNewTaskX constructor and pointed to by task. If task is NULL, no operation is done.

Using this form of execution routines is recommended when you need to compute multiple convolutions or correlations with the same data vector in array x against different vectors in array y. This helps improve performance by eliminating unnecessary overhead in repeated computation of intermediate data required for the operation.