Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

vslConvSetMode
/
vslCorrSetMode

Changes the value of the parameter
mode
 in the convolution or correlation task descriptor.

Syntax

status
=
vslConvSetMode
(
task
,
newmode
);
status
=
vslCorrSetMode
(
task
,
newmode
);
Include Files
  • mkl.h
Input Parameters
Name
Type
Description
task
VSLConvTaskPtr
 for
vslConvSetMode
VSLCorrTaskPtr
 for
vslCorrSetMode
Pointer to the task descriptor.
newmode
const MKL_INT
New value of the parameter
mode
.
Output Parameters
Name
Type
Description
status
int
Current status of the task.
Description
This function is declared
in
mkl_vsl_functions.h
.
The function routine changes the value of the parameter
mode
 for the operation of convolution or correlation. This parameter defines whether the computation should be done via Fourier transforms of the input/output data or using a direct algorithm. Initial value for
mode
 is assigned by a task constructor.
Predefined values for the
mode
 parameter are as follows:
Values of
mode
 parameter
Value
Purpose
VSL_CONV_MODE_FFT
Compute convolution by using fast Fourier transform.
VSL_CORR_MODE_FFT
Compute correlation by using fast Fourier transform.
VSL_CONV_MODE_DIRECT
Compute convolution directly.
VSL_CORR_MODE_DIRECT
Compute correlation directly.
VSL_CONV_MODE_AUTO
Automatically choose direct or Fourier mode for convolution.
VSL_CORR_MODE_AUTO
Automatically choose direct or Fourier mode for correlation.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.