title: Single vs Double datatypes
body: <p>Are there any situations where it would make more sense to use a single datatype instead of a double?  From my searching, the disadvantage to a double is that it requires more space, which isn't a problem for most applications.  In that case, should all floating point numbers be doubles?</p>
  
  <p>A little background info:
  I'm working with an application that deals with a lot of data about coordinates and chemicals. A few customers have noticed that when importing spreadsheets of data, some values with high precision are rounded down the precision of a single.</p>