id="abs">
      absoluteValue<code class='inset'>.abs() &rArr; <i>BigNumber</i></code>
    </h5>
    <p>
      Returns a BigNumber whose value is the absolute value, i.e. the magnitude,
      of this BigNumber.
    </p>
    <pre>
x = new BigNumber(-0.8)
y = x.absoluteValue()         // '0.8'
z = y.abs()                   // '0.8'</pre>



    <h5 id="ceil">
      ceil<code class='inset'>.ceil() &rArr; <i>BigNumber</i></code>
    </h5>
    <p>
      Returns a BigNumber whose value is the value of this BigNum