title: Most efficient way to add two numbers which continually grow
body: <p>What is the most efficient way to continually add two numbers together?</p>
  
  <p>For instance, I have something like the following:</p>
  
  <pre><code>totalFloat = totalFloat + someFloatVar
  </code></pre>
  
  <p>There's gotta be a more efficient way, right? These numbers are continually added up until the user decides to stop the task. Also, <code>someFloatVar</code> is different each time around.</p>
  
  <p>I know that I could do <code>totalFloat += someFloatVar</code>, but I was under the impression that it was the same thing efficiency wise. What I'm looking for is something that will not decrease the overall speed and performance of the application.</p>
  
  <p>If not, is this the best way to add two numbers (that can be potentially quite large?)</p>
  
  <p>In this context, I'm continually updating a mileage. Therefore this could be 5.678 meters or 895.67 meters, or larger.</p>