en raises a <a class="link" href="../error_handling.html#math_toolkit.error_handling.domain_error">domain_error</a>.
          </li>
<li class="listitem">
            If the argument is an infinity, then raises an <a class="link" href="../error_handling.html#math_toolkit.error_handling.overflow_error">overflow_error</a>.
          </li>
<li class="listitem">
            If the argument is zero then returns the smallest representable value:
            for example for type <code class="computeroutput"><span 