s a power of 2 base
  conversion with padding support.</p>
<p><b>See also:</b> <a href="#convertbits-4">convertbits/4</a>.</p>

<h3 class="function"><a name="convertbits-4">convertbits/4</a></h3>
<div class="spec">
<p><code>convertbits(Data, From, To, Opts) -&gt; Return</code>
<ul class="definitions"><li><code>Data = <a href="/home/steven/devel/nostr/apps/erts/doc/erlang.html#type-list">list()</a> | <a href="/home/steven/devel/nostr/apps/erts/doc/erlang.html#type-binary">binary()</a></code></li><li><code>Fr