Benchmark: BigInt to nu - MeasureThat.net

HTML Preparation code:

var bigInt1 = 1000000n
var bigInt2 = 50n

Script Preparation code:

var bigInt1 = 1000000n
var bigInt2 = 50n

Tests:

bigInt1 to Number
var number = Number(bigInt1)
bigInt2 to Number
var number = Number(bigInt2)
bigInt divide and to number
var number = Number(bigInt1 / 1000n)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
bigInt1 to Number
bigInt2 to Number
bigInt divide and to number

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmarking setup.

**What is tested?**

The benchmark tests various ways of converting `BigInt` numbers to JavaScript numbers using the `Number()` function or arithmetic operations (division).

**Options compared:**

There are three test cases:

1. **Direct conversion**: `var number = Number(bigInt1)`, where a `BigInt` value is directly converted to a regular JavaScript number.
2. **Division and then conversion**: `var number = Number(bigInt1 / 1000n)`, where the `BigInt` value is first divided by a smaller `BigInt` (in this case, `1000n`) and then converted to a regular JavaScript number.

**Pros and cons of each approach:**

* **Direct conversion**:
	+ Pros: Simple and straightforward.
	+ Cons: May lose precision due to the way JavaScript handles floating-point arithmetic, which can lead to rounding errors or unexpected results.
* **Division and then conversion**:
	+ Pros: Can help mitigate some issues with direct conversion (e.g., avoiding precision loss), but may introduce additional overhead due to division.
	+ Cons: Requires an intermediate step, which might be overkill for simple conversions.

**Library used:**

In this benchmark, there is no explicit library mentioned. However, it's worth noting that `BigInt` support was introduced in ECMAScript 2020 (ES2020), so any JavaScript engine or runtime must support at least ES2020 to execute these benchmarks.

**Special JS feature or syntax:**

The benchmark leverages the new `BigInt` type and operators introduced in ES2020. Specifically, it uses:

* `n` suffix for `BigInt` literals (e.g., `1000000n`)
* ` BigInt()` function is not explicitly used; instead, the `n` suffix is used to denote a `BigInt` value
* Division between two `BigInt` values using `/`

**Other alternatives:**

If you need to benchmark similar conversions without using `BigInt`, you could test:

* Direct conversion using regular JavaScript numbers (`var number = 1000000`)
* Conversion with arbitrary-precision arithmetic libraries (e.g., `decimal.js` or `mpmath.js`)

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.15

Browser/OS: Safari 15 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
bigInt1 to Number	6351813.0 Ops/sec
bigInt2 to Number	6337767.5 Ops/sec
bigInt divide and to number	5162625.5 Ops/sec

Related benchmarks:

BigInt to nu (version: 0)

Comparing performance of: bigInt1 to Number vs bigInt2 to Number vs bigInt divide and to number

Created: 2 years ago by: Guest

Jump to the latest result

bigInt1 to Number

bigInt2 to Number

bigInt divide and to number

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):