tialize the variable "sum" -</span>
  <span class="comment">// and no temporaries are created at all.</span>
  <span class="comment">//</span>
  <span class="keyword">const</span> <span class="identifier">mp_type</span> <span class="identifier">sum</span> <span class="special">=</span> <span class="special">(((((((((((((((((((((((((((((((</span>     <span class="special">+</span> <span class="identifier">coefs</span><span class="special">[</span><span class="number">31U</span><span class="special">]</span>
