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Chris@10: <h4 class="subsection">4.4.3 Advanced Real-to-real Transforms</h4>
Chris@10:
Chris@10: <pre class="example"> fftw_plan fftw_plan_many_r2r(int rank, const int *n, int howmany,
Chris@10: double *in, const int *inembed,
Chris@10: int istride, int idist,
Chris@10: double *out, const int *onembed,
Chris@10: int ostride, int odist,
Chris@10: const fftw_r2r_kind *kind, unsigned flags);
Chris@10: </pre>
Chris@10: <p><a name="index-fftw_005fplan_005fmany_005fr2r-238"></a>
Chris@10: Like <code>fftw_plan_many_dft</code>, this functions adds <code>howmany</code>,
Chris@10: <code>nembed</code>, <code>stride</code>, and <code>dist</code> parameters to the
Chris@10: <code>fftw_plan_r2r</code> function, but otherwise behave the same as the
Chris@10: basic interface. The interpretation of those additional parameters are
Chris@10: the same as for <code>fftw_plan_many_dft</code>. (Of course, the
Chris@10: <code>stride</code> and <code>dist</code> parameters are now in units of
Chris@10: <code>double</code>, not <code>fftw_complex</code>.)
Chris@10:
Chris@10: <p>Arrays <code>n</code>, <code>inembed</code>, <code>onembed</code>, and <code>kind</code> are not
Chris@10: used after this function returns. You can safely free or reuse them.
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