cial">{</span>

<span class="keyword">class</span> <span class="identifier">float128_backend</span><span class="special">;</span>

<span class="keyword">typedef</span> <span class="identifier">number</span><span class="special">&lt;</span><span class="identifier">float128_backend</span><span class="special">,</span> <span class="identifier">et_off</span><span class="special">&gt;</span>    <span class="identifier">float128</span><span class="special">;</span>

<span class="special">}}</span> <span class="co