Developer Reference for Intel® oneAPI Math Kernel Library for C

ID 766684
Date 3/31/2023
Public

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Multi-dimensional Complex-to-complex FFTs

The following functions compute a multi-dimensional complex-to-complex Fast Fourier transform.

fftwnd_plan fftwnd_create_plan(int rank, const int *n, fftw_direction dir, int flags);

fftwnd_plan fftw2d_create_plan(int nx, int ny, fftw_direction dir, int flags);

fftwnd_plan fftw3d_create_plan(int nx, int ny, int nz, fftw_direction dir, int flags);

fftwnd_plan fftwnd_create_plan_specific(int rank, const int *n, fftw_direction dir, int flags, fftw_complex *in, int istride, fftw_complex *out, int ostride);

fftwnd_plan fftw2d_create_plan_specific(int nx, int ny, fftw_direction dir, int flags, fftw_complex *in, int istride, fftw_complex *out, int ostride);

fftwnd_plan fftw3d_create_plan_specific(int nx, int ny, int nz, fftw_direction dir, int flags, fftw_complex *in, int istride, fftw_complex *out, int ostride);

void fftwnd(fftwnd_plan plan, int howmany, fftw_complex *in, int istride, int idist, fftw_complex *out, int ostride, int odist);

void fftwnd_one(fftwnd_plan plan, fftw_complex *in, fftw_complex *out);

void fftwnd_destroy_plan(fftwnd_plan plan);