                           <span class="keyword">struct</span>{ T x, y, z; };</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;                                <span class="keyword">struct</span>{ T r, g, b; };</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                                <span class="keyword">struct</span>{ T s, t, p; };</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div clas