title: Why is realmin > eps(0)?
body: <p><code>realmin</code> "returns the smallest positive normalized floating point number in IEEE double precision". <code>eps(X)</code> "is the positive distance from ABS(X) to the
  next larger in mangitude floating point number of the same precision as X".</p>
  
  <p>If I am interpreting the above documentation correctly, then <code>realmin</code> -- the smallest positive number that can be represented -- must be smaller than <code>eps
  (0)</code>. But:</p>
  
  <pre><code>&gt;&gt; realmin; % 2.2251e-308
  &gt;&gt; eps(0);  % 4.9407e-324
  </code></pre>
  
  <p>Obviously, <code>eps(0)</code>, which is even smaller, can be represented too. Could someone explain this to me?</p>