RESOLVED DUPLICATE of bug 304915184027
Allow mathematical expressions in image sizes 
https://bugs.webkit.org/show_bug.cgi?id=184027
Summary Allow mathematical expressions in image sizes
John Musgrave
Reported 2018-03-26 16:24:27 PDT
Currently `calc()` is supported as a CSS mathematical function. The CSS Values and Units Level 4 Specification describes a list of math functions [1] consisting of `calc()` in addition to `min()` and `max()`. Suggest implementing recent specification changes. The motivation for opening this bug is the reference to the aforementioned mathematical functions in the HTML Standard [2], which supports the appearance of mathematical functions in the `sizes` attribute on <img> elements. [1]: https://drafts.csswg.org/css-values/#math-function [2]: https://github.com/whatwg/html/pull/3084 & https://github.com/w3c/web-platform-tests/pull/10167
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Dominic Farolino
Comment 1 2018-03-27 09:50:56 PDT
Note this issue might be a duplicate of one, though I'm not sure. Tab told me that the reason `min()` and `max()` made it into the spec as mathematical functions was because Apple said they were going to implement them, so there might already be an issue tracking their implementation. Either way... :)
Philip Jägenstedt
Comment 2 2023-04-18 01:08:34 PDT
https://wpt.fyi/results/html/semantics/embedded-content/the-img-element/sizes/parse-a-sizes-attribute-width-1000px.html?label=experimental&label=master&aligned shows 4 Safari-only test failures due to min() and max() not being supported.
Anne van Kesteren
Comment 3 2026-04-13 01:04:30 PDT
*** This bug has been marked as a duplicate of bug 304915 ***
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