Benchmark: Squaring in javascript

Tests:

pow function
let x = Math.pow(42)
** operator
let y = 42 ** 2

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
pow function
** operator

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 128 on Windows

View result in a separate tab

Test name	Executions per second
pow function	18354490.0 Ops/sec
** operator	238861184.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**Benchmark Overview**

The website "MeasureThat.net" provides a platform for users to create and run JavaScript microbenchmarks. The provided JSON represents two individual test cases: one using the `Math.pow` function and another using the exponentiation operator (`**`).

**Options Compared**

In this benchmark, only two options are compared:

1. **`Math.pow(42)`**: This option uses the built-in `Math.pow` function to calculate the square of 42.
2. **`42 ** 2`**: This option uses the exponentiation operator (`**`) to calculate the square of 42.

**Pros and Cons**

Here's a brief analysis of each approach:

1. **`Math.pow(42)`**:
	* Pros: More readable, explicit, and maintainable code. It clearly conveys the mathematical operation being performed.
	* Cons: May be slower due to the overhead of calling a built-in function.
2. **`42 ** 2`**:
	* Pros: Faster execution, as it's a simple exponentiation operation that can be optimized by the JavaScript engine.
	* Cons: Less readable, as the exponentiation operator is not immediately clear.

**Library and Purpose**

The `Math.pow` function is part of the JavaScript standard library, which provides mathematical functions for various operations. In this benchmark, it's used to calculate the square of a number.

**Special JS Feature or Syntax**

In this benchmark, neither option uses any special JavaScript features or syntax that would affect its interpretation. Both options are relatively straightforward and widely supported across different browsers and environments.

**Other Alternatives**

If you wanted to test the square of 42 using other approaches, here are some alternatives:

1. **Using a library**: You could use a mathematical library like `mathjs` or `math-expression-evaluator` to calculate the square.
2. **Recursive approach**: You could write a recursive function to calculate the square, e.g., `function square(x) { return x * x; }`.
3. **Using a custom implementation**: You could implement the exponentiation operator from scratch using bitwise operations or other optimization techniques.

Keep in mind that these alternatives might not be representative of real-world scenarios, where readability and maintainability are crucial.

Related benchmarks:

Squaring in javascript (version: 0)

Squaring in javascript

Comparing performance of: pow function vs ** operator

Created: one year ago by: Guest

Jump to the latest result

pow function

** operator

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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