How Crystal represents currency

Question

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

Answer 1

Raghavendra, rounding is what I'm getting at.  All of my data represents real exact numbers of dollars and pennies.  My point is, if Crystal stores $12.34 as a double, and as 12 point 34, it can't possibly store the 34 part accurately.   But maybe it stores it as one thousand, two hundred thirty four.  And stores the position of the decimal point separately from the number.  That's what I hope, but I doubt it.
The document Fritz pointed me to seems to be telling me that in the API you always treat currency as a double precision floating  point value.  The Crystal Users Guide XI doesn't say anything about data representation that I could find, just how Crystal will visually format numbers when displaying, which is irrelevant to the question at hand.
Maybe another way to ask the question is: does Crystal have any number type that is not floating point?
So anyway, if all numbers are doubles, and since all my numbers represent whole pennies, I think I could do accurate math, barring possibility of large value overflow, with:
Multiply field value by 100.
Round that to zero decimal places.   Now it is exact number
Sum up the rounded numbers
Divide by 100.  Now there is usually rounding error, but it will never be significant - there' s no opportunity to add up rounding error.
Treat the result as currency
Thanks,
Levin