[TIMOB-3002] iOS: Ti.UI.createLabel with text set as value of 0.07 gives 0.07000000000001

GitHub Issue	n/a
Type	Bug
Priority	Low
Status	Closed
Resolution	Cannot Reproduce
Resolution Date	2017-07-10T21:44:09.000+0000
Affected Version/s	Release 3.0.0
Fix Version/s	n/a
Components	iOS
Labels	api
Reporter	lordsiris
Assignee	Ingo Muschenetz
Created	2011-04-15T03:34:27.000+0000
Updated	2017-07-10T21:44:09.000+0000

Description

currentValue = 0.07;

            var currentReadingValueLabel = Ti.UI.createLabel({
                text: currentValue,
                left: 110,
                top: 22,
                height: 'auto',
                color: '#fff',
                width: 150,
                textAlign: 'left',
                font:{
                    fontSize: 24,
                    fontStyle: 'bold'
                }
            });

When displayed in both the iphone simulator and on the device (iPhone 3GS, iOS 4.1) I don't get just 0.07 but something like 0.07000000000001. Using Dev 1.2.2 with iOS SDK 4.2 and Titanium Mobile 1.5.1 (latest).

Comments

lordsiris 2011-04-15

Maybe this is just an issue with javascript decimal fraction precision, but it's not clear since no arithmetic functions are being applied. Worked around the issue with currentValue = currentValue.toString();.
Stephen Tramer 2012-07-26

Confirmed SDK 2.2.0.014b86f. This is probably a rounding error due to us using 32-bit float instead of 64-bit.
Lee Morris 2017-07-10

I am unable to reproduce this issue with the following environment; iPhone 6 (10.0) Studio 4.9.0.201705302345 Ti SDK 6.1.1 GA Appc NPM 4.2.9 Appc CLI 6.2.2 Ti CLI 5.0.14 Alloy 1.9.11 Xcode 8.2 (8C38) Node v4.8.2 Java 1.8.0_131

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