">#define M_SQRT2     1.41421356237309504880168872420969808   </span><span class="comment">/* sqrt(2)        */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span><span class="preprocessor">#define M_SQRT1_2   0.707106781186547524400844362104849039  </span><span class="comment">/* 1/sqrt(2)      */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span> 