span class="lineno">  388</span>&#160;<span class="preprocessor">#define FFTW_CONSERVE_MEMORY (1U &lt;&lt; 2)</span></div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;<span class="preprocessor">#define FFTW_EXHAUSTIVE (1U &lt;&lt; 3) </span><span class="comment">/* NO_EXHAUSTIVE is default */</span><span class="preprocessor"></span></div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="preprocessor">#define FFTW_PRESERVE_INPUT (1U &l