LibWeb: Add AO for "normalize non-finite values"

We had implemented this in two different ways. Add an AO to to align the implementations.
Author: https://github.com/shannonbooth Commit: e5d03e382e Pull-request: https://github.com/SerenityOS/serenity/pull/24200 Reviewed-by: https://github.com/ADKaster ✅ Reviewed-by: https://github.com/awesomekling
2025-08-12 02:59:45 +00:00 · 2024-05-04 12:39:45 +12:00 · 2024-05-04 12:39:45 +12:00 · e5d03e382e · 2024-07-17 08:38:37 +09:00
commit e5d03e382e
parent 897b5dfe8b
3 changed files with 27 additions and 12 deletions
--- a/Userland/Libraries/LibWeb/HTML/ScrollOptions.h
+++ b/Userland/Libraries/LibWeb/HTML/ScrollOptions.h
@ -15,4 +15,23 @@ struct ScrollOptions {
    Bindings::ScrollBehavior behavior { Bindings::ScrollBehavior::Auto };
 };

+// https://drafts.csswg.org/cssom-view/#normalize-non-finite-values
+[[nodiscard]] inline double normalize_non_finite_values(double value)
+{
+    // When asked to normalize non-finite values for a value x, if x is one of the three special floating point
+    // literal values (Infinity, -Infinity or NaN), then x must be changed to the value 0. [WEBIDL]
+    if (isinf(value) || isnan(value))
+        return 0;
+
+    return value;
+}
+
+// https://drafts.csswg.org/cssom-view/#normalize-non-finite-values
+[[nodiscard]] inline double normalize_non_finite_values(Optional<double> const& value)
+{
+    if (!value.has_value())
+        return 0;
+    return normalize_non_finite_values(value.value());
+}
+
 }