title: Replacing "==" with bitwise operators
body: <p>Using only bitwise operators (|, &amp;, ~, ^, >>, &lt;&lt;) and other basic operators like +, -, and !, is it possible to replace the "==" below?</p>
  
  <pre><code>int equal(int x, int y) {
      return x == y;
  }
  </code></pre>