FFT Functions

The fast Fourier transform function library of Intel® oneAPI Math Kernel Library provides one-dimensional, two-dimensional, and multi-dimensional transforms (of up to seven dimensions) and offers both Fortran and C interfaces for all transform functions.

Table "FFT Functions in Intel® oneAPI Math Kernel Library"lists FFT functions implemented in Intel® oneAPI Math Kernel Library:

FFT Functions in oneMKL
Function Name	Operation
Descriptor Manipulation Functions
DftiCreateDescriptor	Allocates the descriptor data structure and initializes it with default configuration values.
DftiCommitDescriptor	Performs all initialization for the actual FFT computation.
DftiFreeDescriptor	Frees memory allocated for a descriptor.
DftiCopyDescriptor	Makes a copy of an existing descriptor.
FFT Computation Functions
DftiComputeForward	Computes the forward FFT.
DftiComputeBackward	Computes the backward FFT.
Descriptor Configuration Functions
DftiSetValue	Sets one particular configuration parameter with the specified configuration value.
DftiGetValue	Gets the value of one particular configuration parameter.
Status Checking Functions
DftiErrorClass	Checks if the status reflects an error of a predefined class.
DftiErrorMessage	Translates the numeric value of an error status into a message.