an></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                <span class="comment">// Conversions</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                <span class="keyword">template</span>&lt;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                        <span class="keyword">typename</span> X1, <span class="keyword">typename</span> Y1, <span class="keyword">typename