FFTW Interface Support
offers two collections of wrappers for the FFTW interface (www.fftw.org). The wrappers are the superstructure of FFTW to be used for calling the Fourier transform functions. These collections correspond to the FFTW versions 2.x and 3.x and the versions 7.0 and later.
Intel® oneAPI Math Kernel Library
Intel® oneAPI Math Kernel Library
These wrappers enable using Fourier transforms to improve the performance of programs that use FFTW without changing the program source code. See the " Developer Reference for details on the use of the wrappers.
Intel® oneAPI Math Kernel Library
FFTW Interface to
" appendix in the
Intel® oneAPI
Math Kernel LibraryIntel® oneAPI Math Kernel Library
For ease of use, the FFTW3 interface is also integrated in .
Intel® oneAPI Math Kernel Library
The FFTW2 and FFTW3 interfaces are not compatible with each other. Avoid linking to both of them. If you must do so, first modify the wrapper source code for FFTW2:
- Change every instance offftw_destroy_planin thefftw2xcinterface tofftw2_destroy_plan.
- Change all the corresponding file names accordingly.
- Rebuild the pertinent libraries.