title: Shift operators in PL/SQL
body: <p>Whether there is an alternative of <code>shift</code> operators in PL/SQL? There is <code>bitand</code> function, but it accepts only <em>binary_integer</em>-type arguments. </p>
  
  <p>What should I do if I need check up lower/higher bit of really long number (probably set in the line)?</p>
  
  <p>In <code>C</code> there are <code>&lt;&lt;</code> and <code>&gt;&gt;</code> operators. How I can realise them in PL/SQL?</p>