How to deal with Number precision in Actionscript?

Question

I have BigDecimal objects serialized with BlazeDS to Actionscript. Once they hit Actionscript as Number objects, they have values like:

140475.32 turns

Answer 1

If you know the precision you need beforehand, you could store the numbers scaled so that the smallest amount you need is a whole value. For example, store the numbers as cents rather than dollars.

If that's not an option, how about something like this:

function printTwoDecimals(x)
{
   printWithNoDecimals(x);
   print(".");
   var scaled = Math.round(x * 100);
   printWithNoDecimals(scaled % 100);
}

(With however you print with no decimals stuck in there.)

This won't work for really big numbers, though, because you can still lose precision.