Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

DftiCommitDescriptor

Performs all initialization for the actual FFT computation.

Syntax

status
=
DftiCommitDescriptor
(
desc_handle
)
Include Files
  • mkl_dfti.f90
Input Parameters
Name
Type
Description
desc_handle
DFTI_DESCRIPTOR
FFT descriptor.
Output Parameters
Name
Type
Description
desc_handle
DFTI_DESCRIPTOR
Updated FFT descriptor.
status
INTEGER
Function completion status.
Description
This function completes initialization of a previously created descriptor, which is required before the descriptor can be used for FFT computations. Typically, committing the descriptor performs all initialization that is required for the actual FFT computation. The initialization done by the function may involve exploring different factorizations of the input length to find the optimal computation method.
If you call the
DftiSetValue
function to change configuration parameters of a committed descriptor , you must re-commit the descriptor before invoking a computation function. Typically, a committal function call is immediately followed by a computation function call .
The function returns zero when it completes successfully.
See Status Checking Functions for more information on the returned status.
Interface
  INTERFACE DftiCommitDescriptor !Note that the body provided here is to illustrate the different !argument list and types of dummy arguments. The interface !does not guarantee what the actual function names are. !Users can only rely on the function name following the !keyword INTERFACE FUNCTION some_actual function_1 ( Desc_Handle ) INTEGER :: some_actual function_1 TYPE(DFTI_DESCRIPTOR), POINTER :: Desc_Handle END FUNCTION some_actual function_1 END INTERFACE DftiCommitDescriptor  

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