Developer Reference


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.
"FFT Functions in
Intel® oneAPI Math Kernel Library
lists FFT functions implemented in
Intel® oneAPI Math Kernel Library
FFT Functions in
Function Name
Descriptor Manipulation Functions
Allocates the descriptor data structure and initializes it with default configuration values.
Performs all initialization for the actual FFT computation.
Frees memory allocated for a descriptor.
Makes a copy of an existing descriptor.
FFT Computation Functions
Computes the forward FFT.
Computes the backward FFT.
Descriptor Configuration Functions
Sets one particular configuration parameter with the specified configuration value.
Gets the value of one particular configuration parameter.
Status Checking Functions
Checks if the status reflects an error of a predefined class.
Translates the numeric value of an error status into a message.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at