>=</span> <span class="fl">1e-08</span><span class="op">)</span>

<span class="fu">cost</span><span class="op">(</span><span class="va">X</span>, <span class="va">A</span>, <span class="va">B</span>, e <span class="op">=</span> <span class="fl">1e-08</span>, family <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"poisson"</span>, <span class="st">"multinom"</span><span class="op">)</span>, <span cl