49782 2010-11-18 19:56:09 -0800 255 stepUp()s for step=0.00392156863 is not 1. 2024-01-18 08:58:12 -0800 1 1 1 Unclassified WebKit WebCore Misc. 528+ (Nightly build) PC All RESOLVED CONFIGURATION CHANGED P2 Normal --- 0 dmikurube webkit-unassigned ahmad.saleem792 annevk dmikurube oldest_to_newest 311257 0 dmikurube 2010-11-18 19:56:09 -0800 How to reproduce: 1. <input type="number" min="0" value="0" step="0.00392156863" /> 2. stepUp() for 255 times. Expected: 1 (from an example at HTML5 spec. : 4.10.7.2.11 The step attribute) Actual: 1.00000000065 Discussed at the bug 48976. Hints: I found we can calculate it if completely using IEEE 754 single precision numbers. Re-considering precisions in calculation and printing may help. Another option: Re-consider the spec. 2002518 1 ahmad.saleem792 2024-01-02 09:15:38 -0800 Chrome Canary 122 - 1.00000000065 Safari 17.2.1 - 1.00000000065 Firefox Nightly 123 - 1.00000000065 I didn't counted 255 clicks, I just moved using 'Up' key till reaching near 0.99xx to 1.xx. I think web-spec is for 'double precision' number, so we can mark this as 'RESOLVED CONFIGURATION CHANGED'.