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<h2><span class="refentrytitle">Struct template root_typeof_helper&lt;unit&lt; Dim, System &gt;, static_rational&lt; N, D &gt;&gt;</span></h2>
<p>boost::units::root_typeof_helper&lt;unit&lt; Dim, System &gt;, static_rational&lt; N, D &gt;&gt; &#8212; take the <code class="computeroutput"><a class="link" href="static_rational.html" title="Class template static_rational">static_rational</a></code> root of a unit </p>
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