Benchmark: Math.abs(x) v pow(x, 2)

Script Preparation code:

var x = -200000
var abs = Math.abs

Tests:

1
Math.abs(x)
2
x < 0 ? -x : x
3
Math.pow(x, 2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2
3

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser/OS: Chrome 139 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
1	168233360.0 Ops/sec
2	158812176.0 Ops/sec
3	163832768.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, compared, and analyzed in this JavaScript microbenchmark.

**Benchmark Definition**

The benchmark is defined using the `Script Preparation Code` field, which provides a starting point for the test. In this case:

```javascript
var x = -200000;
var abs = Math.abs;
```

This code sets up two variables: `x`, initialized to `-200000`, and `abs`, set to the built-in `Math.abs` function.

**Benchmark Options Compared**

The benchmark compares three different implementations of a mathematical expression:

1. `Math.abs(x)`
2. `x < 0 ? -x : x`
3. `Math.pow(x, 2)`

These options are compared to evaluate which one is the most efficient in terms of execution time.

**Pros and Cons of Each Approach**

Here's a brief analysis of each approach:

1. **`Math.abs(x)`**: This is a straightforward implementation that directly calls the built-in `Math.abs` function. It's likely to be fast, but might not be the most optimized solution.
	* Pros: Simple, efficient
	* Cons: May not be optimized for specific use cases
2. **`x < 0 ? -x : x`**: This implementation uses a conditional statement to handle negative values. While it's more complex than the first option, it can be faster in certain scenarios.
	* Pros: Handles negative numbers, potentially faster in some cases
	* Cons: More complex, may not be as efficient overall
3. **`Math.pow(x, 2)`**: This implementation uses the `Math.pow()` function to square `x`. While it's a simple approach, it might not be the most optimized solution for this specific use case.
	* Pros: Simple, easy to understand
	* Cons: Might not be as efficient as other options

**Other Considerations**

The benchmark also considers the device platform (Desktop), operating system (Windows), and browser version (Chrome 122). These factors can affect the execution time of the benchmarks, so it's essential to consider them when interpreting the results.

**Library Used (if any)**

None of the provided benchmark definitions use any external libraries. However, the `Math.abs` function is a built-in JavaScript method.

**Special JS Features or Syntax (if any)**

There are no special JavaScript features or syntax used in this benchmark that aren't part of standard JavaScript.

**Alternative Approaches**

Some alternative approaches to these benchmarks might include:

* Using specialized libraries like `lodash` or `ramda` for more complex mathematical expressions
* Implementing the expressions using a different language, like C++ or Rust, if performance is critical
* Using just-in-time (JIT) compilation or Ahead-of-Time (AOT) compilation to optimize execution times

Overall, this benchmark provides a useful comparison of three common mathematical expression implementations in JavaScript. The results can help developers understand which approach might be the most efficient for their specific use case.

Related benchmarks:

Math.abs(x) v pow(x, 2) (version: 0)

Comparing performance of: 1 vs 2 vs 3

Created: 3 years ago by: Guest

Jump to the latest result

1

2

3

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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