 name="l00052"></a><span class="lineno">   52</span><span class="comment">//</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment">//    // get the i-th row of the sparse 2d data structure</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment">//    MUDA_GENERIC CDense1D&lt;T&gt; operator()(int i) MUDA_NOEXCEPT</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span 