><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">multiprecision</span><span class="special">/</span><span class="identifier">mpfr</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>  <span class="comment">// Defines the Backend type that wraps MPFR</span>

<span class="keyword">namespace</span> <span class="identifier">mp</span> <span cl