 <tr><td class="paramname">Str</td><td>is a Input String. Will support the lower and upper case values. Value should be between 0-9, a-f and A-F</td></tr>
    <tr><td class="paramname">Buf</td><td>is Output buffer. </td></tr>
    <tr><td class="paramname">Len</td><td>of the input string in bits and it should have even values </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><ul>
<li>XST_SUCCESS no errors occurred.</li>
</ul>
</dd></dl>
<ul>
<li>XST_FAILURE an error when inpu