with approximately 7 decimal digits of precision.</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">float32_t</span> <span class="identifier">pi</span> <span class="special">=</span> <span class="identifier">BOOST_FLOAT32_C</span><span class="special">(</span><span class="number">3.1415926536</span><span class="special">);</span>

<span class="comment">// Declare the Euler-gamma constant 