fftw_complexFFTW_COMPLEX_TO_REALFFTW_COMPLEX_TO_REALFFTW_COMPLEX_TO_REALfftw_create_planfftw_create_planfftw_create_plan_specificfftw_destroy_planfftw_directionfftw_destroy_planfftw_directionfftw_directionfftw_directionfftw_directionfftw_directionFFTW_ENABLE_FLOATFFTW_ESTIMATEfftw_export_wisdomImportant: When invoked for an out-of-place,\n FFTW_COMPLEX_TO_REAL transform, the input array is overwritten\n with scratch values by these routines. The input array is not modified\n for FFTW_REAL_TO_COMPLEX transforms.\n
plan is the plan created by rfftw_create_plan\n (see section Plan Creation for Real One-dimensional Transforms).\n \n Important: When invoked for an out-of-place,\n FFTW_COMPLEX_TO_REAL transform with rank > 1, the input\n array is overwritten with scratch values by these routines. The input\n array is not modified for FFTW_REAL_TO_COMPLEX transforms or for\n FFTW_COMPLEX_TO_REAL with rank == 1.\n
plan is the plan created by rfftwnd_create_plan.\n (see section Plan Creation for Real Multi-dimensional Transforms). In the case of two and three-dimensional transforms, it\n could also have been created by rfftw2d_create_plan or\n rfftw3d_create_plan, respectively.\n"}]}]}]}]}