title: How to perform arthemetic with ULARGE_INTEGER
body: <p>I have an application where i continuously check a disk space and compare it with a particular value. Now the disk space is calculated by:</p>
  
  <pre><code>ULARGE_INTEGER p1;
  ULARGE_INTEGER p2;
  ULARGE_INTEGER p3;
  GetDiskFreeSpaceEx(".", &amp;p1, &amp;p2, &amp;p3); 
  </code></pre>
  
  <p>Now from above method i get the free available space in variable p3. Now how can i compare(arithmetic operations as well) it with an normal integer value. Additionally this code must work in 32 bit as well as 64 bit platform. Or if there is any other option to calculate the free disk space? Thank you</p>