lows for optimal performance
      on move-construction (i.e. no allocation required, we just take ownership of
      the existing object's internal state), while maintaining usability in the standard
      library containers.
    </p>
<h5>
<a name="boost_multiprecision.intro.h1"></a>
      <span class="phrase"><a name="boost_multiprecision.intro.expression_templates"></a></span><a class="link" href="intro.html#boost_multiprecision.intro.expression_templates">Expression
      Templates</a>
    </h5>
<p>
   