e of spot test values calculated using values calculated
        at wolframalpha.com, and random test data generated using MPFR at 1000-bit
        precision and a deliberately naive implementation in terms of the Legendre
        integrals.
      </p>
<h5>
<a name="math_toolkit.ellint.ellint_d.h4"></a>
        <span class="phrase"><a name="math_toolkit.ellint.ellint_d.implementation"></a></span><a class="link" href="ellint_d.html#math_toolkit.ellint.ellint_d.implementation">Implementation</a>
      </h5>
<