Math.round works incorrectly

Question

I found that in Actionscript2, if Math.round does work when I do Math.round(7.5) and it gives me 8, but if I have an math expression which has a value 7.5 and apply Math.round to it, like: Math.round(value * 10) (here value is 0.75), instead of giving me 8, it gives me 7

Anyone know what exactly happened to it?

Thanks in advance!

@EdCottrell yes, I just don't know why it works with a number but fails with a math expression.. — Alan, Mar 12 '14 at 02:44
@DeveloperGuo Thanks for the link, but this is what I am trying to do - rounding to 1 decimal point. The function `toFixed` doesn't exist in Actionscript2. — Alan, Mar 12 '14 at 02:48

score 0 · Answer 1 · answered Mar 12 '14 at 03:08

0

function test(val:Number):int {
  return Util.print(Math.round(val * 10));;
}   
test(.75);   //prints 8

Perhaps provide your code?

answered Mar 12 '14 at 03:08

DeveloperGuo

636
5
15

thanks, I use the function on this page: http://ryanbosinger.com/blog/2008/flashactionscript-innaccurate-math-results/ and it works – Alan Mar 12 '14 at 04:03

score 0 · Accepted Answer · answered Mar 12 '14 at 04:04

0

used the function on this page: http://ryanbosinger.com/blog/2008/flashactionscript-innaccurate-math-results/ the issue got resolved

answered Mar 12 '14 at 04:04

Alan

178
1
10

Math.round works incorrectly

2 Answers2