ss="r-out co"><span class="r-pr">#&gt;</span> FALSE  TRUE </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> attr(,"class")</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "tailup_exponential"</span>
<span class="r-in"><span><span class="fu">tailup_initial</span><span class="op">(</span><span class="st">"exponential"</span>, de <span class="op">=</span> <span class="fl">1</span>, range <span class="op">=</span> <spa