FFTWBufferBase
Buffer for FFTW spectral executioners
FFTWBufferBase is a templated buffer that contains specific interleaved data buffer. Its implementation is linked to the external library FFTW. On construction, FFTWBufferBase creates fftw_plans for forward and inverse discrete Fourier transform (DFTs). The methods forward and backward are equipped with profiling information and call FFTW to perform DFT. FFTWBufferBase takes care of deleting FFTW pointers by calling fftw_destroy_plan upon destruction.
Use of FFTWBufferBases can be observed in SpectralExecutioners.