4</a></td><td><code>convertbits/4</code> function implements a power of 2 base
  conversion with or without padding support.</td></tr>
<tr><td valign="top"><a href="#decode-1">decode/1</a></td><td></td></tr>
<tr><td valign="top"><a href="#decode-2">decode/2</a></td><td><code>decode/2</code> function decodes bech32 encoded data.</td></tr>
<tr><td valign="top"><a href="#encode-2">encode/2</a></td><td><code>encode/2</code> function encodes indexed data with padding using
  bech32 format.</td></tr>
<tr><td vali