</span></span></span>
<span class="r-in"><span><span class="co"># the check() function.</span></span></span>
<span class="r-in"><span><span class="fu">check</span><span class="op">(</span><span class="va">res_data</span>, <span class="va">abs_data</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] TRUE</span>
<span class="r-in"><span><span class="fu">check</span><span class="op">(</span><span class="va">res_data</span>, <span class="va">init_data</span><