"lineno">   15</span>&#160;        <span class="keyword">struct </span>tmat2x2</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;        {</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;                <span class="keyword">typedef</span> tvec2&lt;T, P&gt; col_type;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;                <span class="keyword">typedef</span> tvec2&lt;T, P&gt; row_type;</div>
<di