Return transformed nmatrix array with fftw3
问题 I am creating a ruby wrapper for the fftw3 library for the Scientific Ruby Foundation which uses nmatrix objects instead of regular ruby arrays. I have a curious problem in returning the transformed array in that I am not sure how to do this so I can check the transform has been computed correctly against octave or (something like this) in my specs I have an idea that I might be best to cast the output array out which is an fftw_complex type to a VALUE to pass it to the nmatrix object before