Run results for: Buf to BigInt vs BigInt to Buf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Buf to BigInt

5.2M/s

BigInt to Buf

2.1M/s

View exact numbers

Test name	Executions per second
✓ Buf to BigInt	5,184,726 Ops/sec
BigInt to Buf	2,109,030 Ops/sec

Script Preparation code:


function hashToBigInt(hash) {
 	const view = new DataView(hash.buffer);
  	return (view.getBigUint64(0) << 64n) | view.getBigUint64(8);
}

function bigIntToHash(n) {
	const hash = new Uint8Array(16);
  	const view = new DataView(hash.buffer);
  	view.setBigUint64(0, n >> 64n);
  	view.setBigUint64(8, n);
  	return hash;
}

const hashes = [];
const hashInts = [];

for (let i = 0; i < 1; i++) {
    const hash = new Uint8Array(16);
    window.crypto.getRandomValues(hash);
  	hashes.push(hash);
  	hashInts.push(hashToBigInt(hash));
}

function getHashes() {
	return hashes;
}

function getHashInts() {
 	return hashInts; 
}

Tests:

Buf to BigInt
for (const hash of getHashes()) { hashToBigInt(hash); }
BigInt to Buf
for (const hashInt of getHashInts()) { bigIntToHash(hashInt); }