[jira] [Resolved] (FLEX-24764) Applying NumberFormatter.format() to 17.76 returns the incorrect value

["Justin Mclean (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLEX-24764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Mclean resolved FLEX-24764.
----------------------------------

       Resolution: Fixed
    Fix Version/s: Apache Flex 4.10.0

Ouch - how long has this been a bug? Fixed and checked into develop branch. Mustella formatter tests pass.

Issue was not Number convert ion as this code also produced the error:
var nf:mx.formatters.NumberFormatter = new mx.formatters.NumberFormatter();
nf.precision = 2;
nf.rounding = "up";
				
var formatted:String = nf.format(17.76);
trace(formatted);
                
> Applying NumberFormatter.format() to 17.76 returns the incorrect value
> ----------------------------------------------------------------------
>
>                 Key: FLEX-24764
>                 URL: https://issues.apache.org/jira/browse/FLEX-24764
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Formatters
>    Affects Versions: Adobe Flex SDK Previous
>         Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Browser: Other (specify version)
> Language Found: English
>            Reporter: Adobe JIRA
>            Assignee: Justin Mclean
>             Fix For: Apache Flex 4.10.0
>
>
> {*** ORIGINALLY POSTED AS ALS-71 ; WAS REQUESTED TO POST IT HERE INSTEAD ***}
>   Steps to reproduce:
> 1. setup a new NumberFormatter() instance, setting the precision to 2 and the rounding to "up":
>       var nf:NumberFormatter = new NumberFormatter();
> nf.precision = 2;
> nf.rounding = "up";
> 2. Create a var to format the number 17.76:
>       var num:Number = new Number( nf.format(17.76) );
> 3. Trace the result:
>       trace(num);
>  
>  Actual Results: 17.77
>  
>  Expected Results: 17.76
> In my application my actual number starts out to a precision of 3 (17.760), but either way I get the same result. Other numbers do not seem to have this issue. I even tried 18.76, 17.77, 17.75, they all correctly round back to themselves (because the 3 digit would be interpreted as a 0 ).
> I have run into other issues where my number was divided by another and the result would be something like 13.7000000000001, and even though my interface only shows 13.70, the rounded correctly formats it to 13.71. However with this 17.76 number that doesn't seem to be the case.
> If this is not a bug, but rather a binary math error please explain why this number is specifically having the issue so I can relay that to my client.
> Specs:
> Eclipse 3.4.2
> Flash Builder 4.0 (build 272416) plugin
> Project is using the Flex 3.5 SDK
>  
>  Workaround (if any):
>  Add logic to check to see if the value is 17.76 and not format it if it is

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