;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit<span class="special">,</span> <span class="keyword">typename</span> Y<span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="plain_return__idp109528704.html" title="Struct template plain_return_type_1&lt;unary_arithmetic_action&lt; plus_action &gt;, boost::units::quantity&lt; Unit, Y &gt;&gt;">plain_return_type_1</a><span class="special">&lt;</span><