 input), you
might call:

<pre class="example">     ptrdiff_t fftw_mpi_local_size_3d_transposed(
                     ptrdiff_t n0, ptrdiff_t n1, ptrdiff_t n2, MPI_Comm comm,
                     ptrdiff_t *local_n0, ptrdiff_t *local_0_start,
                     ptrdiff_t *local_n1, ptrdiff_t *local_1_start);
</pre>
   <p><a name="index-fftw_005fmpi_005flocal_005fsize_005f3d_005ftransposed-385"></a>
Here, <code>local_n0</code> and <code>local_0_start</code> give the size and
starting index of the <code>n0<