Intent to ship: CSS Values 4 Math functions

[CanadaHonk]

As of today (Firefox 118), I intend to turn on 10 new CSS Values 4 Math functions by default on all platforms. Specifically, these functions: round, mod, rem, pow, sqrt, hypot, log, exp, abs, sign.

They have been in enabled in Nightly, behind the preferences: layout.css.round.enabled, layout.css.mod-rem.enabled, layout.css.exp.enabled, layout.css.abs-sign.enabled.

We now pass essentially all WPT tests for these functions, and they are part of Interop 2023. WebKit and Blink already ship most of these, with Blink missing a few currently.

Bug to turn on by default: https://bugzil.la/1814589
Standard: https://drafts.csswg.org/css-values/#math
Web platform tests: https://wpt.fyi/results/css/css-values

[Tom Ritter]

Do the underlying calculations for these functions use the fdlibm
library? (Otherwise they will expose platform characteristics we have
been working to not expose to web content.)

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[Mike Taylor]

Could you expand on these platform characteristics (that you don't want
to expose)?

thx,
Mike

[Tiaan Louw]

The "fdlibm" library is not used for any calculations in these functions.

On Thursday, August 3, 2023 at 3:42:12 PM UTC+2 Tom Ritter wrote:

Do the underlying calculations for these functions use the fdlibm
library? (Otherwise they will expose platform characteristics we have
been working to not expose to web content.)

On Thu, Aug 3, 2023 at 8:27 AM CanadaHonk <o...@oojmed.com> wrote:
>
> As of today (Firefox 118), I intend to turn on 10 new CSS Values 4 Math functions by default on all platforms. Specifically, these functions: round, mod, rem, pow, sqrt, hypot, log, exp, abs, sign.
>
> They have been in enabled in Nightly, behind the preferences: layout.css.round.enabled, layout.css.mod-rem.enabled, layout.css.exp.enabled, layout.css.abs-sign.enabled.
>
> We now pass essentially all WPT tests for these functions, and they are part of Interop 2023. WebKit and Blink already ship most of these, with Blink missing a few currently.
>
> Bug to turn on by default: https://bugzil.la/1814589
> Standard: https://drafts.csswg.org/css-values/#math
> Web platform tests: https://wpt.fyi/results/css/css-values
>
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