/code> dimension for the
<em>non</em>-transposed data, as in the previous sections.  For
<em>transposed</em> data (e.g. the output for
<code>FFTW_MPI_TRANSPOSED_OUT</code>), <code>local_n1</code> and
<code>local_1_start</code> give the size and starting index of the <code>n1</code>
dimension, which is the first dimension of the transposed data
(<code>n1</code> by <code>n0</code> by <code>n2</code>).

   <p>(Note that <code>FFTW_MPI_TRANSPOSED_IN</code> is completely equivalent to
performing <code>FFTW_MPI_T