Run results for: Big Int to Uint8Array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Direct

5.3M/s

Hex

1.4M/s

View exact numbers

Test name	Executions per second
✓ Direct	5,327,440 Ops/sec
Hex	1,392,690 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

function bigIntToUint8Array64LE_direct(num) {
    const result = new Uint8Array(8);
    result[0] = Number(num & 0xffn);
    result[1] = Number((num >> 8n) & 0xffn);
    result[2] = Number((num >> 16n) & 0xffn);
    result[3] = Number((num >> 24n) & 0xffn);
    result[4] = Number((num >> 32n) & 0xffn);
    result[5] = Number((num >> 40n) & 0xffn);
    result[6] = Number((num >> 48n) & 0xffn);
    result[7] = Number((num >> 56n) & 0xffn);
    return result;
}

function bigIntToUint8Array64LE_hex(value) {
    const hex = value.toString(16).padStart(8 * 2, '0');
    const bytes = new Uint8Array(8);
    for (let i = 0; i < 8; i++) {
      bytes[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
    }
    return bytes;
}

Tests:

Direct
bigIntToUint8Array64LE_direct(538753629635n)
Hex
bigIntToUint8Array64LE_hex(538753629635n)