"lineno">   76</span>    {</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>        <span class="keywordflow">return</span> operator()(xy.x, xy.y);</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>    }</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    MUDA_GENERIC auto_const_t&lt;T&gt;&amp; f