 templates,
    from previous versions of the header, cannot be used for <a href=
    "#chaining">base class chaining</a>.</p>

    <table cellpadding="5" border="1" align="center">
      <caption>
        Final Arithmetic Operator Template Classes
      </caption>

      <tr>
        <td colspan="2">
          <table align="center" border="1">
            <caption>
              <em>Key</em>
            </caption>

            <tr>
              <td><code>T</code>: primary operand type</td>

              