Something else you may look into is separating your mantissa (display) from your value. you can keep the true number in one variable with high precision, then round the number off using sprintf.

Real value        displayed
   _
33.3               33.33 %
   _
66.6               66.67 %
   _      _
33.3 + 66.6        100.00 %

The trick is to get perl to store the real values at the highest precision possible. I may not have expressed myself very well here, so someone else feel free to elaborate.

hattmoward - mhoward%at%hattmoward.org