="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">&gt;::</span><span class="identifier">epsilon</span><span class="special">());</span>
   <span class="keyword">return</span> <span class="identifier">x</span> <span class="special">&gt;</span> <span class="identifier">crossover</span> <span class="special">?</span> <span class="identifier">exp</span><span class="special