span> len = x*x + y*y + z*z;
<a name="l00113"></a>00113     <span class="keywordflow">if</span> (len != 1) {
<a name="l00114"></a>00114         <span class="keyword">const</span> <span class="keywordtype">float</span> recipLen = 1.f / <a class="code" href="rs__cl_8rsh.html#a92da0faef80c4d8f66e954c8c169a729">sqrt</a>(len);
<a name="l00115"></a>00115         x *= recipLen;
<a name="l00116"></a>00116         y *= recipLen;
<a name="l00117"></a>00117         z *= recipLen;
<a name="l00118"></a>00118     }
<a na