 (1U &lt;&lt; 19)</span></div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="preprocessor">#define FFTW_ALLOW_PRUNING (1U &lt;&lt; 20)</span></div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;}  <span class="comment