raph components and algorithms, from Jeremy Siek
        and a University of Notre Dame team.</li>
    <li><a href="integer/index.html">integer</a> - Headers to ease
        dealing with integral types.</li>
    <li><a href="numeric/interval/doc/interval.htm">interval </a>- Extends the 
    usual arithmetic functions to mathematical intervals, from Guillaume 
    Melquiond, Hervé Brönnimann and Sylvain Pion.</li>
    <li><a href="io/doc/ios_state.html">io state savers</a> - Save I/O state to 
    prevent 