https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2025-2/dfticomputebackwarddm.html
DftiComputeBackwardDM
Computes the backward FFT.
https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2023-2/dfticomputebackwarddm.html
DftiComputeBackwardDM
Computes the backward FFT.