Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content
Contents

DftiCopyDescriptor

Makes a copy of an existing descriptor.

Syntax

status
=
DftiCopyDescriptor
(
desc_handle_original
,
&desc_handle_copy
)
;
Include Files
  • mkl.h
Input Parameters
Name
Type
Description
desc_handle_original
DFTI_DESCRIPTOR_HANDLE
The FFT descriptor to copy.
DFTI_DESCRIPTOR_HANDLE
The FFT descriptor to copy.
Output Parameters
Name
Type
Description
dfti_handle_dst
DFTI_DESCRIPTOR_HANDLE
The copy of the FFT descriptor.
status
MKL_LONG
Function completion status.
Description
 This function makes a copy of an existing descriptor. The resulting descriptor
desc_handle_copy
 and the existing descriptor
desc_handle_original
 specify the same configuration of the transform, but do not have any memory areas in common ("deep copy").
The function returns zero when it completes successfully.
See Status Checking Functions for more information on the returned status.
Prototype
 
MKL_LONG DftiCopyDescriptor( DFTI_DESCRIPTOR_HANLDE, DFTI_DESCRIPTOR_HANDLE * );
 

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