Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 6/24/2024
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

vslConvExecX1D/vslCorrExecX1D

Computes convolution or correlation for one-dimensional case with the fixed first operand vector.

Syntax

status = vslsconvexecx1d(task, y, ystride, z, zstride)

status = vsldconvexecx1d(task, y, ystride, z, zstride)

status = vslcconvexecx1d(task, y, ystride, z, zstride)

status = vslzconvexecx1d(task, y, ystride, z, zstride)

status = vslscorrexecx1d(task, y, ystride, z, zstride)

status = vsldcorrexecx1d(task, y, ystride, z, zstride)

status = vslccorrexecx1d(task, y, ystride, z, zstride)

status = vslzcorrexecx1d(task, y, ystride, z, zstride)

Include Files

  • mkl.fi, mkl_vsl.f90

Input Parameters

Name

Type

Description

task

INTEGER*4 task(2) for vslscorrexecx1d, vsldcorrexecx1d, vslccorrexecx1d, vslzcorrexecx1d

TYPE(VSL_CONV_TASK) for vslsconvexecx1d, vsldconvexecx1d, vslcconvexecx1d, vslzconvexecx1d

TYPE(VSL_CORR_TASK) for vslscorrexecx1d, vsldcorrexecx1d, vslccorrexecx1d, vslzcorrexecx1d

VSLCorrTaskPtr for vslsCorrExecX1D, vsldCorrExecX1D, vslcCorrExecX1D, vslzCorrExecX1D

Pointer to the task descriptor.

x , y

REAL*8 for vsldconvexecx1d and vsldcorrexecx1d,

COMPLEX*8 forvslcconvexecx1d and vslccorrexecx1d,

COMPLEX*16 forvslzconvexecx1d and vslzcorrexecx1d

REAL(KIND=4), DIMENSION(*) for vslsconvexecx1d and vslscorrexecx1d,

REAL(KIND=8), DIMENSION(*) for vsldconvexecx1d and vsldcorrexecx1d,

COMPLEX(KIND=4), DIMENSION (*) forvslcconvexecx1d and vslccorrexecx1d,

COMPLEX(KIND=8), DIMENSION (*) for vslzconvexecx1d and vslzcorrexecx1d

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

ystride, zstride

INTEGER

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

Output Parameters

Name

Type

Description

z

REAL*8 for vsldconvexecx1d and vsldcorrexecx1d,

COMPLEX*8 forvslcconvexecx1d and vslccorrexecx1d,

COMPLEX*16 forvslzconvexecx1d and vslzcorrexecx1d

REAL(KIND=4), DIMENSION(*) for vslsconvexecx1d and vslscorrexecx1d,

REAL(KIND=8), DIMENSION(*) for vsldconvexecx1d and vsldcorrexecx1d,

COMPLEX(KIND=4), DIMENSION (*) forvslcconvexecx1d and vslccorrexecx1d,

COMPLEX(KIND=8), DIMENSION (*) for vslzconvexecx1d and vslzcorrexecx1d

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 vslConvExecX1D/vslCorrExecX1D routines computes convolution or correlation of one-dimensional (assuming that dims =1) 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 expects that the first operand vector was set on the task construction stage.

Parameters of the operation are read from the task descriptor created previously by a corresponding vslConvNewTaskX1D/vslCorrNewTaskX1D 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 one-dimensional 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.