1&nbsp;v2&nbsp;o2&nbsp;len</code> copies <code class="code">len</code> elements
   from array <code class="code">v1</code>, starting at element number <code class="code">o1</code>, to array <code class="code">v2</code>,
   starting at element number <code class="code">o2</code>. It works correctly even if
   <code class="code">v1</code> and <code class="code">v2</code> are the same array, and the source and
   destination chunks overlap.</p>

<p>Raise <code class="code"><span class="constructor">Invalid_arg