title: Ada Digits Confusion
body: <p>I have been doing some reading, and I'm having a tough time understanding how to interpret something that is a "digits x".
  I.E.</p>
  
  <pre><code>type something is digits 6
  </code></pre>
  
  <p>I get that it's 6 digits of precision, but I guess what has me mixed up is what does that mean.</p>
  
  <p>1) Y.XXXXXX (6X's),</p>
  
  <p>2) XXX.XXX (Any number of digits, just will always be 6 of them counting both fore and aft the mantissa)</p>
  
  <p>...</p>
  
  <p>I'm just trying to understand what a range of something that is digits 6 (or digits n to be more generic), is there a formula I can simply plug into to determine what my ranges are on a type that is some number of digits?</p>