Benchmark: powers - MeasureThat.net

Script Preparation code:

var nums = Array.from({ length: 10000 }, () => Math.random())

Tests:

x * x
for (let i = 0; i < nums.length; i++) nums[i] * nums[i]
x ** 2
for (let i = 0; i < nums.length; i++) nums[i]**2
x * x * x
for (let i = 0; i < nums.length; i++) nums[i] * nums[i] * nums[i]
x**3
for (let i = 0; i < nums.length; i++) nums[i]**3

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
x * x
x ** 2
x * x * x
x**3

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 dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition:**

The provided JSON defines a benchmark with a script preparation code that generates an array of 10,000 random numbers between 0 and 1 using `Array.from()`. The HTML preparation code is empty, indicating that no specific HTML structure needs to be created for this benchmark.

**Test Cases:**

The individual test cases are defined within the JSON data. Each test case has a unique name and a corresponding benchmark definition in the format of "for (let i = 0; i < nums.length; i++) expression". The expressions in each test case calculate:

1. `x * x` (squaring `x`)
2. `x ** 2` (same as squaring `x`, but with a different syntax)
3. `x * x * x` (cubing `x`)
4. `x**3` (cubing `x`, again with a different syntax)

These test cases are designed to measure the performance of JavaScript's exponentiation operators (`*` and `**`) under various conditions.

**Options Compared:**

The main options being compared in this benchmark are:

1. Exponentiation using the unary `*` operator (e.g., `x * x`)
2. Exponentiation using the binary `**` operator (e.g., `x ** 2`)
3. Cubing `x` (both with and without parentheses)

These options provide insight into the performance differences between the two exponentiation operators and how cubing compares to squaring.

**Pros and Cons:**

1. **Exponentiation using the unary `*` operator (`x * x`):**
	* Pros:
		+ More concise syntax.
		+ May be faster due to reduced overhead.
	* Cons:
		+ Can lead to NaN (Not a Number) results if `x` is non-integer.
2. **Exponentiation using the binary `**` operator (`x ** 2`):**
	* Pros:
		+ More intuitive syntax for exponentiation.
		+ Produces correct results even when `x` is non-integer.
	* Cons:
		+ May be slower due to increased overhead.

The cubing test cases provide additional insights into the performance of these operators, especially in the case where the exponent is odd (e.g., `x * x * x`).

**Libraries and Special Features:**

None of the test cases rely on specific libraries or JavaScript features beyond basic arithmetic operations. The benchmark focuses solely on comparing the performance of two exponentiation operators.

**Other Alternatives:**

If you're interested in exploring alternative approaches, consider the following:

1. **Using `Math.pow()` instead of `*` or `**`:**
	* This would provide a more accurate and consistent result for both squaring and cubing.
2. **Using SIMD instructions (e.g., SSE/AVX) for element-wise operations:**
	* This could potentially lead to significant performance improvements, especially when dealing with large datasets.

However, these alternatives are outside the scope of this specific benchmark, which focuses on comparing the basic exponentiation operators in JavaScript.

Related benchmarks:

powers (version: 0)

Comparing performance of: x * x vs x ** 2 vs x * x * x vs x**3

Created: 2 years ago by: Guest

Jump to the latest result

x * x

x ** 2

x * x * x

x**3

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):