LibJS: Add support for Float16Array

Implements TC39 stage three proposal for Float16Arrays: https://tc39.es/proposal-float16array
Author: https://github.com/rmg-x Commit: ea20545853 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2184 Reviewed-by: https://github.com/ADKaster ✅ Reviewed-by: https://github.com/trflynn89
2025-09-19 07:49:05 +00:00 · 2024-11-09 15:29:03 -06:00 · 2024-11-09 15:29:03 -06:00 · ea20545853 · 2024-11-10 21:49:20 +00:00
commit ea20545853
parent c1ec2ddb63
49 changed files with 133 additions and 8 deletions
--- a/Libraries/LibJS/Tests/builtins/Math/Math.f16round.js
+++ b/Libraries/LibJS/Tests/builtins/Math/Math.f16round.js
@ -0,0 +1,8 @@
+test("basic functionality", () => {
+    expect(Math.f16round).toHaveLength(1);
+
+    expect(Math.f16round(5.5)).toBe(5.5);
+    expect(Math.f16round(5.05)).toBe(5.05078125);
+    expect(Math.f16round(5)).toBe(5);
+    expect(Math.f16round(-5.05)).toBe(-5.05078125);
+});
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.BYTES_PER_ELEMENT.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.BYTES_PER_ELEMENT.js
@ -8,6 +8,7 @@ test("basic functionality", () => {
    expect(Int16Array.BYTES_PER_ELEMENT).toBe(2);
    expect(Int32Array.BYTES_PER_ELEMENT).toBe(4);
    expect(BigInt64Array.BYTES_PER_ELEMENT).toBe(8);
+    expect(Float16Array.BYTES_PER_ELEMENT).toBe(2);
    expect(Float32Array.BYTES_PER_ELEMENT).toBe(4);
    expect(Float64Array.BYTES_PER_ELEMENT).toBe(8);
 });
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.from.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.from.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
@ -185,8 +186,9 @@ test("typed array from TypedArray element cast", () => {
        [0x100, 0xff],
        [0x100, 0xff],
        [0x100, 0xff],
+        [0x100, 0xff],
    ];
-    const u8Expected = [0xff, 0xff, 0xff, 0xff, -1, 0xff, 0xff, 0xff, 0xff];
+    const u8Expected = [0xff, 0xff, 0xff, 0xff, -1, 0xff, 0xff, 0xff, 0xff, 0xff];

    TYPED_ARRAYS.forEach((T, i) => {
        const newArrFromU32 = new T(u32Array);
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.of.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.of.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.@@iterator.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.@@iterator.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js
@ -8,6 +8,7 @@ const TYPED_ARRAYS = [
    { array: Int16Array, expected: 2 },
    { array: Int32Array, expected: 4 },
    { array: BigInt64Array, expected: 8 },
+    { array: Float16Array, expected: 2 },
    { array: Float32Array, expected: 4 },
    { array: Float64Array, expected: 8 },
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.at.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.at.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.buffer.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.buffer.js
@ -8,6 +8,7 @@ const TYPED_ARRAYS = [
    Int16Array,
    Int32Array,
    BigInt64Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.byteLength.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.byteLength.js
@ -8,6 +8,7 @@ const TYPED_ARRAYS = [
    { array: Int16Array, expected: 6 },
    { array: Int32Array, expected: 12 },
    { array: BigInt64Array, expected: 24 },
+    { array: Float16Array, expected: 6 },
    { array: Float32Array, expected: 12 },
    { array: Float64Array, expected: 24 },
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.byteOffset.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.byteOffset.js
@ -8,6 +8,7 @@ const TYPED_ARRAYS = [
    Int16Array,
    Int32Array,
    BigInt64Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.copyWithin.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.copyWithin.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.entries.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.entries.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.every.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.every.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.fill.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.fill.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.filter.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.filter.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.find.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.find.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findIndex.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findIndex.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findLast.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findLast.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findLastIndex.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.findLastIndex.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.forEach.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.forEach.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.includes.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.includes.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.indexOf.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.indexOf.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.keys.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.keys.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.lastIndexOf.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.lastIndexOf.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.length.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.length.js
@ -8,6 +8,7 @@ const TYPED_ARRAYS = [
    Int16Array,
    Int32Array,
    BigInt64Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.map.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.map.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reduce.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reduce.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reduceRight.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reduceRight.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reverse.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.reverse.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.set.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.set.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    { array: Int8Array, maxUnsignedInteger: 2 ** 7 - 1 },
    { array: Int16Array, maxUnsignedInteger: 2 ** 15 - 1 },
    { array: Int32Array, maxUnsignedInteger: 2 ** 31 - 1 },
+    { array: Float16Array, maxUnsignedInteger: 2 ** 11 - 1 },
    { array: Float32Array, maxUnsignedInteger: 2 ** 24 - 1 },
    { array: Float64Array, maxUnsignedInteger: Number.MAX_SAFE_INTEGER },
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.slice.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.slice.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.some.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.some.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.sort.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.sort.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.subarray.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.subarray.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toLocaleString.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toLocaleString.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toReversed.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toReversed.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toSorted.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toSorted.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.values.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.values.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];
--- a/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.with.js
+++ b/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.with.js
@ -6,6 +6,7 @@ const TYPED_ARRAYS = [
    Int8Array,
    Int16Array,
    Int32Array,
+    Float16Array,
    Float32Array,
    Float64Array,
 ];