pp</a>&gt;

</span>
 <span class="identifier">BOOST_UNITS_PHYSICAL_CONSTANT</span><span class="special">(</span><span class="identifier">c</span><span class="special">,</span> <span class="identifier">quantity</span><span class="special">&lt;</span> <span class="identifier">velocity</span> <span class="special">&gt;</span><span class="special">,</span> 
                               <span class="number">299792458</span><span class="special">.</span><span class="number">0</span> <span class="special">*</spa