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  </table>

  <h1>Negators</h1>

  <p>The header <a href="../../boost/functional.hpp">functional.hpp</a>
  provides enhanced versions of both the negator adapters from the C++
  Standard Library (&sect;20.3.5):</p>

  <ul>
    <li><tt>unary_negate</tt></li>

    <li><tt>binary_negate</tt></li>
  </ul>

  <p>As well as the corresponding helper functions</p>

  <ul>
    <li><tt>not1</tt></li>

    <li><tt>not