Interactive pricing module issue

Question

what is going on here? there seems to be an issue in AS2 and
I'm not sure what's at the root of it.
except for the values 1.1, 2.2, 4.4 and 8.8 I can get all
other digit combinations to display in a monetary/currency type
format of two decimal places (including *.00 and *.*0). I'm using a
TextInput component together with a listener for trial purposes.
code follows below.
any thoughts please? thank you :)
here's the code:-
function currency(amount:Number):String {
amount = 100 * amount;
trace("amount x 100 = " + amount);
if (amount%100 == 0) {
trace("hundreds amount = " + amount);
conclusion = amount/100 + ".00";
trace("conclusion = " + conclusion);
return conclusion;
} else {
if (amount%10 == 0) {
conclusion = ((amount/100) + "0");
trace("tens amount = " + amount);
trace("conclusion = " + conclusion);
return conclusion;
} else {
conclusion = amount /100;
trace("zeros amount = " + amount);
trace("conclusion = " + conclusion);
return conclusion;
here's the listener:-
fieldupdater.change = function(evtObj) {
trace("evtObj.target.text = " + evtObj.target.text);
var inputdigits:Number = evtObj.target.text;
trace("testdigits = " + currency(Number(inputdigits)));
trace("");
here's the register:-
ctiTestField.addEventListener("change", fieldupdater);
just add a textinput component (called ctiTestField) to the
stage and give it a try and you may experience the same trace
output; if not please let me know.

Answer 1

The problem appears to lie in the following computation in
the conditional:
amount%10
The problem is probably related to Flash's less than precise
math capabilities (even for simple math). If you trace it you'll
see what I mean. What I did was change it to be:
Math.round(amount%10)
and it managed to produce the desired result for a #.# value.
I didn't chase it beyond that..