How Crystal represents currency

Crystal Reports XI

When you tell crystal to convert number to Currency, is the result represented as a floating point number?

I'm trying to figure out if I have to worry about rounding error when taking the sum of a field formula that has a value like "CCur ({Get_RptCashCounts;1.Amount})"

I think the answer was in a pdf still indexed on google, but I can't hunt any basic documentation down now:

support.businessobjects.com/documentation/product_guides/boexi/en/crxi_Techref_en.pdf