title: Display way too small results in R
body: <p>Sometimes, I will have to estimate the exponential notation(here, I mean to estimate b of <code>a*e^b</code>) of a number way too small. For example,</p>
  
  <pre><code>&gt; 1-pnorm(30)
  [1] 0
  </code></pre>
  
  <p>Because the result is too small, I tried <code>options()</code> with parameters <code>scipen</code> and <code>digits</code> and failed. Neither tweaks worked.</p>