Developer Reference

Contents

Multi-dimensional Real-to-complex/Complex-to-real FFTs

The following functions compute multi-dimensional real-to-complex and complex-to-real Fast Fourier transforms.
rfftwnd_plan rfftwnd_create_plan(int
rank
, const int
*n
, fftw_direction
dir
, int
flags
);
rfftwnd_plan rfftw2d_create_plan(int
nx
, int
ny
, fftw_direction
dir
, int
flags
);
rfftwnd_plan rfftw3d_create_plan(int
nx
, int
ny
, int
nz
, fftw_direction
dir
, int
flags
);
rfftwnd_plan rfftwnd_create_plan_specific(int
rank
, const int
*n
, fftw_direction
dir
, int
flags
, fftw_real
*in
, int
istride
, fftw_real
*out
, int
ostride
);
rfftwnd_plan rfftw2d_create_plan_specific(int
nx
, int
ny
, fftw_direction
dir
, int
flags
, fftw_real
*in
, int
istride
, fftw_real
*out
, int
ostride
);
rfftwnd_plan rfftw3d_create_plan_specific(int
nx
, int
ny
, int
nz
, fftw_direction
dir
, int
flags
, fftw_real
*in
, int
istride
, fftw_real
*out
, int
ostride
);
void rfftwnd_real_to_complex(rfftwnd_plan
plan
, int
howmany
, fftw_real
*in
, int
istride
, int
idist
, fftw_complex
*out
, int
ostride
, int
odist
);
void rfftwnd_complex_to_real(rfftwnd_plan
plan
, int
howmany
, fftw_complex
*in
, int
istride
, int
idist
, fftw_real
*out
, int
ostride
, int
odist
);
void rfftwnd_one_real_to_complex(rfftwnd_plan
plan
, fftw_real
*in
, fftw_complex
*out
);
void rfftwnd_one_complex_to_real(rfftwnd_plan
plan
, fftw_complex
*in
, fftw_real
*out
);
void rfftwnd_destroy_plan(rfftwnd_plan
plan
);

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.