                    ptrdiff_t *local_n0, ptrdiff_t *local_0_start);

ptrdiff_t fftw_mpi_local_size_2d_transposed(ptrdiff_t n0, ptrdiff_t n1, MPI_Comm comm,
                                            ptrdiff_t *local_n0, ptrdiff_t *local_0_start,
                                            ptrdiff_t *local_n1, ptrdiff_t *local_1_start);
ptrdiff_t fftw_mpi_local_size_3d_transposed(ptrdiff_t n0, ptrdiff_t n1, ptrdiff_t n2,
                                            MPI_Comm comm,
                            