CSSMathClamp is missing from several algorithms: - [Serialize a CSSMathValue](https://drafts.css-houdini.org/css-typed-om-1/#serialize-a-cssmathvalue) - [Equal numeric values](https://drafts.css-houdini.org/css-typed-om-1/#equal-numeric-value) - [Reify a math expression](https://drafts.css-houdini.org/css-typed-om-1/#reify-a-math-expression) - [Create a sum value](https://drafts.css-houdini.org/css-typed-om-1/#create-a-sum-value)
