div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;                                <span class="keyword">struct</span>{ T r, g; };</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;                                <span class="keyword">struct</span>{ T s, t; };</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;                      