Hi Seokho,
Thanks for working on this!
On 12/9/21 6:56 PM, Seokho Song wrote:
Contact emails
0xdev...@gmail.com
Explainer
https://github.com/DevSDK/calc-infinity-and-NaN/blob/master/explainer.md
<https://github.com/DevSDK/calc-infinity-and-NaN/blob/master/explainer.md>
Specification
https://drafts.csswg.org/css-values/#ref-for-math-function%E2%91%A1%E2%91%A0
<https://drafts.csswg.org/css-values/#ref-for-math-function%E2%91%A1%E2%91%A0>
Design docs
https://bit.ly/349gXjq <https://bit.ly/349gXjq>
Summary
CSS calc() math function should allow infinity and NaN values by
'infinity', '-infinity', 'NaN' keywords or expressions that could be
evaluated into infinity or NaN such as 'calc(1/0)'.
Blink component
Blink>CSS
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>
Search tags
css <https://chromestatus.com/features#tags:css>, calc
<https://chromestatus.com/features#tags:calc>, infinity
<https://chromestatus.com/features#tags:infinity>, nan
<https://chromestatus.com/features#tags:nan>
TAG review
Not required. It's a very small part of CSS.
TAG review status
Not applicable
Risks
Interoperability and Compatibility
This feature may have interoperability risks. Other browsers have not
yet implemented this feature.
Looking at
https://wpt.fyi/results/css/css-values?label=master&label=experimental&aligned&q=infinity-nan,
it seems like Chrome and Safari disagree on handling a top-level
calculation that produces NaN, like "calc(NaN * 1px)" - I think we're
treating it as positive Infinity, and they seem to be treating as
(unsigned?) zero?
I filed https://bugs.webkit.org/show_bug.cgi?id=234176 to track that.
Gecko: No signal (https://bugzilla.mozilla.org/show_bug.cgi?id=1682444
<https://bugzilla.mozilla.org/show_bug.cgi?id=1682444>)
Can you please request a position? https://bit.ly/blink-signals
WebKit: Shipped/Shipping
(https://bugs.webkit.org/show_bug.cgi?id=231044
<https://bugs.webkit.org/show_bug.cgi?id=231044>)
Web developers: No signals
Other signals:
Debuggability
N/A
DevTools should support this out of the box, I think.
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>?
Yes
Flag name
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1133390
<https://bugs.chromium.org/p/chromium/issues/detail?id=1133390>
Estimated milestones
99
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5657825571241984
<https://chromestatus.com/feature/5657825571241984>
Links to previous Intent discussions
Intent to prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/4cT9dMkzVXE/m/aCT8B6PDAwAJ
<https://groups.google.com/a/chromium.org/g/blink-dev/c/4cT9dMkzVXE/m/aCT8B6PDAwAJ>
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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