Benchmark: math pow vs multiply 5

Tests:

pow
var x = Math.pow(154.1245, 5);
mult
var y = Array.from(Array(5)).reduce(acc => acc * 5, 1);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
pow
mult

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
pow	14574693.0 Ops/sec
mult	6616672.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its test cases to understand what is being tested.

**Overview**

The benchmark uses JavaScript microbenchmarks on MeasuredThat.net, which allows users to create and run custom benchmarks. The goal of this specific benchmark is to compare the performance of two approaches: `Math.pow` (power operation) versus multiplication by a constant factor.

**Test Cases**

There are two individual test cases:

1. **"pow"`**: This test case uses the `Math.pow` function to calculate the power of a given number (`154.1245`) raised to the power of `5`. In essence, this tests how fast JavaScript can perform exponentiation using the `Math.pow` method.
2. **"mult"`**: This test case uses array manipulation to achieve multiplication by a constant factor. Specifically, it creates an array with five elements, reduces them using the `Array.prototype.reduce()` method, and multiplies each element by `5`. The goal is to measure how fast JavaScript can perform multiplication using this approach.

**Options Compared**

The benchmark compares two options:

* **`Math.pow`**: Uses the built-in `Math.pow` function to calculate exponentiation.
* **Multiplication by a constant factor**: Uses array manipulation and the `reduce()` method to achieve multiplication of an array element by a constant factor (`5`).

**Pros and Cons**

Here are some pros and cons for each approach:

* **`Math.pow`**:
	+ Pros: Direct, straightforward way to perform exponentiation.
	+ Cons: May be slower due to the overhead of the `Math.pow()` function.
* **Multiplication by a constant factor**:
	+ Pros: Can be faster since it avoids the overhead of a separate `Math.pow()` call.
	+ Cons: Requires additional array manipulation and may be less intuitive.

**Library Used**

In this benchmark, no external libraries are used. The tests rely on built-in JavaScript functions and methods, such as `Math.pow` and `Array.prototype.reduce`.

**Special JS Features or Syntax**

There is a special syntax used in the "mult" test case: **`Array.prototype.reduce()`**. This method applies a function to each element of an array and reduces it to a single value.

In summary, this benchmark aims to measure the performance difference between using `Math.pow` for exponentiation versus multiplication by a constant factor using array manipulation.

**Other Alternatives**

If you were to implement similar benchmarks, you could consider exploring other approaches, such as:

* Using a library like NumJS or MathJax for efficient numerical computations.
* Implementing your own custom optimization techniques for exponentiation or multiplication.
* Using alternative programming paradigms, like functional programming, which might provide different performance characteristics.

Keep in mind that these alternatives would require significant changes to the benchmark's approach and may not yield meaningful results without careful consideration of the underlying assumptions.

Related benchmarks:

math pow vs multiply 5 (version: 0)

Comparing performance of: pow vs mult

Created: 2 years ago by: Guest

Jump to the latest result

pow

mult

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):