lscurrencyformat without rounding

I don't think IsCurrencyFormat is possible without rounding. From my understanding the function comes out of the box together with rounding to 2 or 3 decimal places. I would presume that that is because the smallest unit of the majority of currencies is 1/100th or 1/1000th. For example, 100 cents to the dollar and 100 eurocents to the euro.

What you could do is: create your own function. Start by creating a database table called currency. It consists of 4 columns (id, locale, symbol, numberOfDecimals).. The function could then work as follows:

string function formatCurrency(required numeric amount, required string locale) {
    // Using arguments.locale, get the currency symbol from the database,
    // together with the number of decimals in which to round off.
    // Return the amount in the desired currency format.
}