Benchmark: pow vs abs - MeasureThat.net

Script Preparation code:

var x = 30000;

Tests:

Math.pow
Math.pow(x);
Math.abs
Math.abs(x);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math.pow
Math.abs

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/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Windows

View result in a separate tab

Test name	Executions per second
Math.pow	4742754.5 Ops/sec
Math.abs	4665885.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain what's being tested in the provided JSON benchmark.

**Benchmark Definition**

The benchmark is comparing the performance of two mathematical operations: `Math.pow` (power) and `Math.abs` (absolute value). The script preparation code is set to a variable `x = 30000;`, which will be used as input for both tests. There's no HTML preparation code, indicating that this benchmark only focuses on JavaScript performance.

**Options Compared**

The two options being compared are:

1. **Math.pow**: calculates the power of a number (e.g., `x` in this case).
2. **Math.abs**: returns the absolute value of a number (e.g., `x` in this case).

**Pros and Cons**

Both operations have their own advantages and disadvantages:

* **Math.pow**:
	+ Pros: can be used for exponentiation, which is common in various mathematical and scientific applications.
	+ Cons: may be slower due to its recursive nature or the use of a library function (if available).
* **Math.abs**:
	+ Pros: very fast and efficient, as it's often implemented using a simple lookup table or a single operation (e.g., bitwise AND).
	+ Cons: only suitable for absolute value calculations; not useful in other mathematical operations.

**Library**

In this benchmark, `Math.pow` uses the built-in JavaScript method to perform exponentiation. Similarly, `Math.abs` relies on the browser's implementation of absolute value calculation, which is often optimized for performance.

**Special JS Feature/Syntax**

There's no special JavaScript feature or syntax being tested in this benchmark. The code snippets are straightforward and don't involve any advanced features like async/await, generators, or modern web APIs.

**Other Alternatives**

If you were to implement an alternative implementation of `Math.pow` or `Math.abs`, you could consider:

* Using a library function like `exponentiationBySquaring` (a well-known algorithm for fast exponentiation) instead of the built-in method.
* Implementing absolute value calculation using bitwise operations, similar to what's done in `Math.abs`.
* Using a different data type or representation for exponents (e.g., using bitmasks or integers).

Keep in mind that any alternative implementation would need to be optimized and tested thoroughly to ensure comparable performance.

Related benchmarks:

pow vs abs (version: 0)

y

Comparing performance of: Math.pow vs Math.abs

Created: 2 years ago by: Guest

Jump to the latest result

Math.pow

Math.abs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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