I'm using in-browser Javascript, not NodeJS. I have two Uint8Arrays ...
var d1 = new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255])
var d2 = new Uint8Array([255, 255, 255, 255, 237, 49, 56, 0])
Each will have exactly 8 elements that are whole numbers between 0 and 255. Each array represents a larger number. For example, the first array represents the positive integer
0xffffffff
My question is how can I divide d1 by d2 and get a result? I read that the maximum value for an integer in Javascript is 2^53, which I believe less than the maximum number I could have. I don't care what the object type the result is, but Uint8Array is fine by me.
There is a library you can use call BigInteger.. https://www.npmjs.com/package/big-integer
I didn't see a built in way to use Uint8Array, but I found this -> Javascript ArrayBuffer to Hex that had a way to convert into hex, that bigInteger seems ok with.
So here is an example of using it. ->
var d1 = new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]);
var d2 = new Uint8Array([255, 255, 255, 255, 237, 49, 56, 0]);
function buf2hex(buffer) { // buffer is an ArrayBuffer
return Array.prototype.map.call(new Uint8Array(buffer), x => ('00' + x.toString(16)).slice(-2)).join('');
}
var bd1 = bigInt(buf2hex(d1), 16);
console.log(`value 1 = ${bd1.toString()}`);
var bd2 = bigInt(buf2hex(d2), 16);
console.log(`value 2 = ${bd2.toString()}`);
var r = bd1.divmod(bd2);
console.log(`result ${r.quotient.value} remainder ${r.remainder.value}`);
<script src="https://peterolson.github.io/BigInteger.js/BigInteger.min.js"></script>