ramming_Classes">Metaprogramming
      Classes</a></span></dt>
<dt><span class="section"><a href="Utilities.html#boost_units.Utilities.Metaprogramming_Predicates">Metaprogramming
      Predicates</a></span></dt>
</dl></div>
<p>
      Relatively complete SI and CGS unit systems are provided in <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.systems.si_hpp" title="Header &lt;boost/units/systems/si.hpp&gt;">boost/units/systems/si.hpp</a></code>
      and <code class="comput