title: mysql float storage size?
body: <p>On the mysql docs it states that a <code>float</code> column uses,</p>
  
  <pre><code>float(p) = 4 bytes if 0 &lt;= p &lt;= 24, 8 bytes if 25 &lt;= p &lt;= 53
  </code></pre>
  
  <p>So does this mean that if my column is expressed as below</p>
  
  <pre><code>float(20, 6)
  </code></pre>
  
  <p>Then does <code>p</code> equal to the amounts added? So in the above example it would be a total size of 8 bytes as <code>20 + 6 == 26</code>.</p>
  
  <p>Or does it mean that p is equal to 20 so that it would be a storage size of 4 bytes?</p>