t;&lt; 4) </span><span class="comment">/* cancels FFTW_DESTROY_INPUT */</span><span class="preprocessor"></span></div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="preprocessor">#define FFTW_PATIENT (1U &lt;&lt; 5) </span><span class="comment">/* IMPATIENT is default */</span><span class="preprocessor"></span></div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;<span class="preprocessor">#define FFTW_ESTIMATE (1U &lt;&lt; 6)</span><