pecial">;</span>

<span class="identifier">mp_type</span> <span class="identifier">mysin</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">mp_type</span><span class="special">&amp;</span> <span class="identifier">x</span><span class="special">)</span>
<span class="special">{</span>
  <span class="comment">// Approximation of sin(x * pi/2) for -1 &lt;= x &lt;= 1, using an order 63 polynomial.</span>
  <span class="keyword">static</span> <span class="keyword">cons