Benchmark: BigInt parseInt vs Number

Script Preparation code:

var text = BigInt(1685879979);

Tests:

number
const x = Number(text)
parseint
const xx = parseInt(text)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
number
parseint

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is comparing two approaches:

1. `Number` (also known as decimal)
2. `parseInt`

These two approaches are used to convert a BigInt value (`text`) into a number.

**Options Compared**

We have two options being compared:

* Using the `Number` function to convert a BigInt to a number
* Using the `parseInt` function to convert a BigInt to an integer

**Pros and Cons of Each Approach:**

1. **Number**
	* Pros:
		+ Easy to use and understand
		+ Works with both positive and negative numbers
		+ Can handle floating-point numbers
	* Cons:
		+ May lose precision when dealing with very large or small numbers
		+ Can cause issues if the input is not a valid number (e.g., NaN)
2. **parseInt**
	* Pros:
		+ Fast and efficient, especially for integer conversions
		+ Can handle large integers without losing precision
	* Cons:
		+ Only works with positive integers or optional leading zeros
		+ Returns 0 for negative numbers or non-numeric inputs

**Library: None**

There is no external library being used in this benchmark.

**Special JS Feature or Syntax: None**

There are no special JavaScript features or syntaxes being tested in this benchmark. However, it's worth noting that BigInt support was introduced in ECMAScript 2015 (ES6) and has since become a standard feature in modern browsers.

**Other Alternatives:**

If you were to replace `Number` or `parseInt` with other conversion functions, some alternatives could be:

* `BigInt.toString()` for converting BigInt to a string
* `Number.toString()` for converting decimal numbers to strings (although this would not be an ideal solution)
* `Buffer.from()` and `toString(16)` for converting integers to hexadecimal strings (not directly applicable here)

Keep in mind that these alternatives may have different performance characteristics, handling of edge cases, or requirements for input validation.

**Benchmark Preparation Code**

The provided script preparation code sets a variable `text` as a BigInt value: `var text = BigInt(1685879979);`. This initializes the input value for the benchmark tests.

Related benchmarks:

BigInt parseInt vs Number (version: 0)

Comparing performance of: number vs parseint

Created: 2 years ago by: Guest

Jump to the latest result

number

parseint

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):