 0;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>                }</div>
</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>                <span class="keywordtype">bool</span> is_nan ()<span class="keyword"> const</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="keyword">