   decimal_approx -> string
	 val fromString :      string -> decimal_approx option
	 val scan :            (char, 'a) StringCvt.reader -> (decimal_approx, 'a) StringCvt.reader
    end
  </PRE>

<?php section("description", "description") ?>

  <P>
    Like the Standard ML Basis'
    <A href="http://www.standardml.org/Basis/ieee-float.html"><TT>IEEEReal</TT></A> structure.
  </P>

  <DL>
    <DT>
      <TT>exception Unordered</TT>
    </DT>
    <DD>
      <P>Indicates that two values are incomparable with r