title: comparing two floats to see if they're both negative, or both positive
body: <p>Hay guys, i have 2 floats, which both comes from input boxes.</p>
  
  <p>I need to compare these 2 floats, if one is negative and one is positive thrown an error. If they're both positive, or both negative, thats fine.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks</p>