="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="non_mem.html#boost_octonions.octonions.non_mem.binary_equality_operators">operator ==</a> <span class="special">(::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><span class="identifier">quaternion</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="keyword">const</span>