&#160;<span class="preprocessor">#define FFTW_BACKWARD (+1)</span></div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;<span class="preprocessor">#define FFTW_NO_TIMELIMIT (-1.0)</span></div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;<span class="comment">/* documented flags */