class="sourceCode r"><code class="sourceCode r">wvl &lt;-<span class="st"> </span><span class="fl">632.8</span>
gold &lt;-<span class="st"> </span><span class="kw">epsAu</span>(wvl)
results &lt;-<span class="st"> </span><span class="kw"><a href="../reference/recursive_fresnelcpp.html">recursive_fresnelcpp</a></span>(<span class="dt">epsilon =</span> <span class="kw">list</span>(<span class="fl">1.5</span>^<span class="dv">2</span>, gold$epsilon, <span class="dv">1</span>), <span class="dt">wavelength =</spa