Function fftw_sys::fftw_plan_many_r2r

pub unsafe extern "C" fn fftw_plan_many_r2r(
    rank: c_int, 
    n: *const c_int, 
    howmany: c_int, 
    in_: *mut f64, 
    inembed: *const c_int, 
    istride: c_int, 
    idist: c_int, 
    out: *mut f64, 
    onembed: *const c_int, 
    ostride: c_int, 
    odist: c_int, 
    kind: *const fftw_r2r_kind, 
    flags: c_uint
) -> fftw_plan