n class="comment">// -- Conversions --</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;                template &lt;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                        typename X1, typename Y1, typename Z1, typename W1,</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                       