Visible to Intel only — GUID: GUID-50B3CA3E-C4B8-4469-A72B-733985A95905
Visible to Intel only — GUID: GUID-50B3CA3E-C4B8-4469-A72B-733985A95905
Calling FFTW2 Interface Wrappers from Fortran
The FFTW2 wrappers to Intel® oneAPI Math Kernel Library (oneMKL) provide the following subroutines for calling from Fortran:
call fftw_f77_create_plan(plan, n, dir, flags)
call fftw_f77(plan, howmany, in, istride, idist, out, ostride, odist)
call fftw_f77_one(plan, in, out)
call fftw_f77_threads(nthreads, plan, howmany, in, istride, idist, out, ostride, odist)
call fftw_f77_threads_one(nthreads, plan, in, out)
call fftw_f77_destroy_plan(plan)
call fftwnd_f77_create_plan(plan, rank, n, dir, flags)
call fftw2d_f77_create_plan(plan, nx, ny, dir, flags)
call fftw3d_f77_create_plan(plan, nx, ny, nz, dir, flags)
call fftwnd_f77(plan, howmany, in, istride, idist, out, ostride, odist)
call fftwnd_f77_one(plan, in, out)
call fftwnd_f77_threads(nthreads, plan, howmany, in, istride, idist, out, ostride, odist)
call fftwnd_f77_threads_one(nthreads, plan, in, out)
call fftwnd_f77_destroy_plan(plan)
call rfftw_f77_create_plan(plan, n, dir, flags)
call rfftw_f77(plan, howmany, in, istride, idist, out, ostride, odist)
call rfftw_f77_one(plan, in, out)
call rfftw_f77_threads(nthreads, plan, howmany, in, istride, idist, out, ostride, odist)
call rfftw_f77_threads_one(nthreads, plan, in, out)
call rfftw_f77_destroy_plan(plan)
call rfftwnd_f77_create_plan(plan, rank, n, dir, flags)
call rfftw2d_f77_create_plan(plan, nx, ny, dir, flags)
call rfftw3d_f77_create_plan(plan, nx, ny, nz, dir, flags)
call rfftwnd_f77_complex_to_real(plan, howmany, in, istride, idist, out, ostride, odist)
call rfftwnd_f77_one_complex_to_real (plan, in, out)
call rfftwnd_f77_real_to_complex(plan, howmany, in, istride, idist, out, ostride, odist)
call rfftwnd_f77_one_real_to_complex (plan, in, out)
call rfftwnd_f77_threads_complex_to_real(nthreads, plan, howmany, in, istride, idist, out, ostride, odist)
call rfftwnd_f77_threads_one_complex_to_real(nthreads, plan, in, out)
call rfftwnd_f77_threads_real_to_complex(nthreads, plan, howmany, in, istride, idist, out, ostride, odist)
call rfftwnd_f77_threads_one_real_to_complex(nthreads, plan, in, out)
call rfftwnd_f77_destroy_plan(plan)
call fftw_f77_threads_init(info)
The FFTW Fortran functions are wrappers to FFTW C functions.
See also these resources:
www.fftw.org |
for the original FFTW 2.x documentation. |
for limitations of the wrappers. |