Run results for: bigint-vs-string

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

toString float

3.8M/s

toString bigInt

2.5M/s

bigInt multiply

2.4M/s

bigInt compare

2.3M/s

float compare

2.3M/s

float multiply

2.3M/s

bigint greater

2.3M/s

string compare

2.3M/s

float greater

2.2M/s

string greater

2.1M/s

toFloat bigInt

1.8M/s

toFloat string

1.5M/s

View exact numbers

Test name	Executions per second
✓ toString float	3,751,038 Ops/sec
toString bigInt	2,523,867 Ops/sec
bigInt multiply	2,350,817 Ops/sec
bigInt compare	2,335,404 Ops/sec
float compare	2,322,628 Ops/sec
float multiply	2,309,210 Ops/sec
bigint greater	2,250,134 Ops/sec
string compare	2,250,019 Ops/sec
float greater	2,243,890 Ops/sec
string greater	2,100,364 Ops/sec
toFloat bigInt	1,794,393 Ops/sec
toFloat string	1,527,263 Ops/sec

Script Preparation code:

/**
 * Gets a random number between 2 bigInts
 * @param {BigInt} max
 * @param {BigInt} [min=0n]
 * @returns {BigInt}
 */
function randomBetween(max, min = 0n) {
  max = BigInt(max);
  min = BigInt(min);
  if (max < min) {
    [max, min] = [min, max]
  }
  const range = max - min;
  const count = calculatePrecision(range);
  let random = new Array(Number(count))
    .fill(0)
    .map(() => BigInt(Math.floor(Math.random() * (2 ** 32))))
    .map((int, index) => int << (BigInt(index) * 32n))
    .reduce((acc, int) => acc + int, 0n);


  let bitCount = countBits(range);
  let minRandom = random >> ((32n * count) - bitCount);
  if (minRandom > range) return randomBetween(max, min);
  else return minRandom + min;
}

function calculatePrecision(range) {
  const result = range >> 32n;
  if (result >= 1n) {
    return calculatePrecision(result) + 1n;
  }
  return 1n;
}

function countBits(range) {
  const result = range >> 1n;
  if (result >= 1n) {
    return countBits(result) + 1n;
  }
  return 1n;
}

const a = randomBetween(10n ** 20n, 10n ** 19n)
const b = randomBetween(10n ** 20n, 10n ** 19n)
aBigInt = a;
bBigInt = b;
aString = a.toString();
bString = b.toString();
aFloat = Number(a);
bFloat = Number(b);

Tests:

float multiply
return aFloat * bFloat;
bigInt multiply
return aBigInt * bBigInt;
float compare
return aFloat === bFloat;
bigInt compare
return aBigInt === bBigInt
string compare
return aString === bString
float greater
return aFloat > bFloat;
bigint greater
return aBigInt > bBigInt;
string greater
return aString > bString
toString bigInt
return aBigInt.toString();
toString float
return aFloat.toString();
toFloat bigInt
return Number(aBigInt);
toFloat string
return parseInt(aString, 10);