"computeroutput"><span class="identifier">a</span> <span class="special">&lt;&lt;</span>
        <span class="number">0</span></code>. On the other hand, the simple expedient
        of breaking the integral into two domains: (a, 0) and (0, b) and integrating
        each seperately using the tanh-sinh integrator, works just fine.
      </p>
<p>
        Finally, some endpoint singularities are too strong to be handled by tanh_sinh
        or equivalent methods, for example consider integrating the function: