Add `fc.float16Array()`

[TomerAberbach]

🚀 Feature Request

Add a fc.float16Array() that generates Float16Array

Motivation

Seems we have a function for every typed array, but not this one. I think it's the newest one, so I'm guessing it didn't exist when the current functions were added.

Example

console.log(fc.sample(fc.float16Array(), 10))

[dubzzz]

Go for it! Opened to a PR to add it

[TomerAberbach]

Seems like Float16Array is only available starting with Node 24, so I think we'd need to upgrade the @types/node dev dependency and then be careful not to reference Float16Array outside of fc.float16Array so that we don't break older Node versions

[TomerAberbach]

Also, based on how things are implemented for Float32Array and Float64Array, I think we need a float16 arbitrary (i.e. one that generates floating point values that are precisely representable in 16-bit floats); do we wanna make that a public one as well?

[dubzzz]

I'm wondering if a float16 could be implemented based on the existing float(32) that we multiply by something. Otherwise recoding the float thing would be a nightmare 😭

[TomerAberbach]

Looks like there's https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/f16round, but that doesn't exist in Node yet lol

Maybe we can adapt what polyfills do: https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.math.f16round.js

Or we can try to abstract your current code so that it's parameterized by the structure of the float (like number of bits per section) 🤷