title: R largest/smallest representable numbers
body: <p>I'm trying to get the largest/smallest representable number in R.</p>
  
  <p>After typing ".Machine"</p>
  
  <p>I got:</p>
  
  <pre><code>$double.xmin
  [1] 2.225074e-308
  
  $double.xmax
  [1] 1.797693e+308
  </code></pre>
  
  <p>However even if I type 2.225074e-309 in R command prompt I get 2.225074e-309 instead of the expected 0</p>
  
  <p>How can I find the largest/smallest number for which adding or subtracting 1 would lead to either Inf(Adding 1 to largest number) or 0(subtracting 1 from smallest number) ?</p>