Implement Float16Array Once It is in V8

[caoccao]

proposal-float16array is a proposal to add float16 (aka half-precision or binary16) TypedArrays to JavaScript.

This issue is for tracking the work item about implementing Float16Array once it is in V8.

[caoccao]

It's been in V8. The first journey of implementing Float16Array into V8

[caoccao]

• [x] Wait for Node.js v22 promoted to LTS because Node.js v20 doesn't support Float16Array.
• [x] Implement Float16 in Java.

References

• FP16 from Android
• Float16 from Apache Arrow
• Float16Array from MDN

[caoccao]

To enable Float16Array in Node.js:

$ node --js-float16array
Welcome to Node.js v22.9.0.
Type ".help" for more information.
> new Float16Array([2.65625, 58.59375])
Float16Array(2) [ 2.65625, 58.59375 ]
>