Bug 263141

Summary:	@property integer syntax rounds numbers incorrectly
Product:	WebKit	Reporter:	Jane Ori <janeori>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	ntim
Priority:	P2
Version:	Safari 16
Hardware:	Unspecified
OS:	Unspecified

Description Jane Ori 2023-10-13 15:22:14 PDT

Safari is using an away-from-zero rounding strategy to cast number values assigned to an integer property.

Chrome uses the "nearest" strategy that JS's Math.round() uses.
"nearest" is also the default rounding for the round() CSS function

Here is a reduced test case showing the differences:

https://codepen.io/propjockey/pen/vYvMbaX/253c4756c72e962cb10b0c19b396ea37?editors=1100

Thank you!
// Jane

Comment 1 Tim Nguyen (:ntim) 2023-10-14 08:00:46 PDT

I switched to using a towards positive infinity rounding strategy in bug 260777. Can you please re-test in STP?

*** This bug has been marked as a duplicate of bug 260777 ***