  </p>
<p>
      At present, the price of a free license is slightly lower speed.
    </p>
<p>
      Of course, the main cost of higher precision is very much decreased (usually
      at least hundred-fold) computation speed, and big increases in memory use.
    </p>
<p>
      Some libraries offer true <a href="http://en.wikipedia.org/wiki/Arbitrary-precision_arithmetic" target="_top">arbitrary-precision
      arithmetic</a> where the precision is limited only by available memory
      and compute time, but