Benchmark: Compare long way

Tests:

Compare if, x predefined as 0
var a = Math.random()*100; var b = Math.random()*100; var x = 0; if ( b > a ) { var x = 1; }; var y = 0.7 * x;
Compare if else
var a = Math.random()*100; var b = Math.random()*100; if ( b > a ) { var x = 1; } else { var x = 0; }; var y = 0.7 * x;
Compare math abs
var a = Math.random()*100; var b = Math.random()*100; var x = (Math.abs(a-b)-Math.abs(a-b+1)+1)/2; var y = 0.7 * x;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Compare if, x predefined as 0
Compare if else
Compare math abs

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0

Browser/OS: Firefox 53 on Windows 7

View result in a separate tab

Test name	Executions per second
Compare if, x predefined as 0	41455712.0 Ops/sec
Compare if else	41477036.0 Ops/sec
Compare math abs	43472808.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**Benchmark Definition JSON**

The provided Benchmark Definition JSON is quite minimalistic, which is normal for microbenchmarking. It defines three benchmark cases:

* "Compare long way": This name suggests that this benchmark case tests an alternative approach to comparison.
* "Compare if, x predefined as 0": This test case compares two ways of assigning a value to variable `x` based on the condition in the `if` statement.
* "Compare math abs": This test case measures the performance difference between using `Math.abs()` in two different ways.

**Options Compared**

The three benchmark cases compare the following approaches:

1. **"Compare long way"**: This is an abstract name, and its actual implementation is not provided in the Benchmark Definition JSON. However, based on the context, it's likely that this test case compares a more complex approach to comparison with simpler ones.
2. **"Compare if, x predefined as 0"**:
	* `if (b > a) { var x = 1; };` : This implementation assigns `x` only when the condition is true.
	* `else { var x = 0; };` : This implementation assigns `x` outside the `if` statement, using the `else` clause to provide a default value.
3. **"Compare math abs"**:
	* `(Math.abs(a-b)-Math.abs(a-b+1)+1)/2`: This implementation uses the expression `(a-b)` and then takes the absolute value of both results before combining them.

**Pros and Cons**

Here's a brief analysis of each approach:

1. **"Compare long way"**: Without knowing its actual implementation, it's difficult to provide pros and cons. However, if it's more complex than the other two approaches, it might be slower due to additional operations or overhead.
2. **"Compare if, x predefined as 0"**:
	* Pros: If the condition is often true, this approach can avoid unnecessary assignments.
	* Cons: If the condition is often false, this approach can result in unnecessary assignments and potentially slow performance.
3. **"Compare math abs"**:
	* Pros: This implementation uses a more straightforward approach to calculate the absolute difference between two values.
	* Cons: It might be slower if the `Math.abs()` function has additional overhead or if it's not optimized for this specific use case.

**Library Usage**

None of the benchmark cases explicitly use any libraries. However, if we consider the context of JavaScript, we can infer that:

* The `Math.random()` function is part of the built-in JavaScript API.
* The `if` statement and `else` clause are part of the JavaScript syntax.

**Special JS Features or Syntax**

The only special feature used in this benchmark is the `Math.abs()` function. This is a built-in JavaScript function that returns the absolute value of a number.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are a few ideas:

* Use a more complex comparison algorithm, such as binary search or interpolation.
* Compare different ways of assigning values to variables, such as using `const` instead of `var`.
* Test the performance of different JavaScript engines or browsers using benchmarking tools like WebPageTest or Benchmark.js.

Keep in mind that microbenchmarking is all about measuring small differences in performance. The choices you make will depend on your specific use case and requirements.

Related benchmarks:

Compare long way (version: 0)

Testing some alternative if comparing

Comparing performance of: Compare if, x predefined as 0 vs Compare if else vs Compare math abs

Created: 7 years ago by: Guest

Jump to the latest result

Compare if, x predefined as 0

Compare if else

Compare math abs

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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