title: 64-bit integer faster approach to compare with zero
body: <p>Whereas that <a href="https://en.wikipedia.org/wiki/0#Elementary_algebra" rel="nofollow noreferrer">zero is a special constant</a>, looking for the faster approach to check <em>x==0</em>... There are some way to optimize and <strong>to ensure that compiler will do some optimization?</strong></p>
  
  <hr>
  
  <p>Illustration <strong>only to conextualize</strong> the comparison with zero, because Stackoverflow demands a piece of code to be a valid question.</p>
  
  <pre><code>#include &lt;stdint.h&gt;
  
  _Bool is_zero(int64_t checkMe)
  {   /* ensure that compiler will do some optimization */
     return checkMe==0x00000000LL;
  }
  </code></pre>