Question

I am doing the following in actionscript in Coldfusion Flash Forms:

90 / 3.7

Gives me:

24.3243243243243

Whereas the calculator gives me:

24.32432432432432

Note the extra 2 at the end.

So my problem occurs when I am trying to get the original value of 90 by taking the 24.3243243243243 * 3.7 and then I get 89.9999999999 which is wrong.

Why is Actionscript truncating the value and how do I avoid this so I get the proper amount that the calculator gets?

Thanks so much.

Answer 1

Round your number using a routine like this

var toFixed:Function = function(number, factor) {
    return (Math.round(number * factor)/factor);
}

Where the factor is 10, 100, 1000 etc, a simple way to think about it is the number of 0’s in the factor is the number of decimal places

so

toFixed(1.23341230123, 100) = 1.23