Benchmark: math pow 3 vs multiply

Tests:

pow
var x = Math.pow(54,3);
mult
var y = 54*54*54

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: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser/OS: Chrome 128 on Windows

View result in a separate tab

Test name	Executions per second
pow	19792870.0 Ops/sec
mult	234830352.0 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 benchmark definition and test cases to understand what is being tested.

**What is tested?**

The benchmark measures the performance difference between two approaches: using `Math.pow()` (also known as exponentiation) and manual multiplication (`*`) for calculating the cube of a number (`3^x`).

**Options compared:**

Two options are being compared:

1. **`Math.pow(54, 3)`**: This is the first option, which uses the built-in `Math.pow()` function to calculate the cube of 54.
2. **`54 * 54 * 54`**: The second option is a manual multiplication of three numbers to achieve the same result.

**Pros and Cons:**

* **Using `Math.pow()`**:
	+ Pros:
		- More concise and readable code
		- Less prone to errors (as it's a standardized function)
	+ Cons:
		- May incur additional overhead due to the function call
		- Not optimized for performance in all browsers or JavaScript engines
* **Manual multiplication (`54 * 54 * 54`)**:
	+ Pros:
		- Typically faster and more efficient than using `Math.pow()`
		- Can be optimized further by using bitwise operations (e.g., `1 << 18`)
	+ Cons:
		- More verbose and error-prone code
		- May not be as readable or maintainable

**Other considerations:**

* **Precision**: The benchmark doesn't account for precision issues related to floating-point arithmetic. In some cases, using `Math.pow()` might result in slightly different results due to rounding errors.
* **Browser and JavaScript engine variations**: Different browsers and JavaScript engines may optimize or implement the `Math.pow()` function differently, affecting its performance.

**Library usage:**

The benchmark doesn't explicitly mention any libraries being used. However, it's possible that the test code uses the built-in `Math` library for the exponentiation operations.

**Special JS features or syntax:**

There are no special JavaScript features or syntax mentioned in the provided code snippets.

Now, let's consider other alternatives:

* **Alternative methods for exponentiation**: Other approaches for calculating exponents include:
	+ Bitwise shifting (`1 << x`) for integer exponents
	+ Using a loop to iterate `x` times and multiply by `54`
	+ Using a library like `mathjs` or `exponent.js` specifically designed for mathematical operations
* **Optimized JavaScript engines**: Some JavaScript engines, like V8 (used by Chrome), have specific optimizations for exponentiation. The benchmark may want to consider testing these optimized implementations.

These alternatives would require additional setup and modifications to the test code to cover their performance characteristics and potential variations across different browsers and devices.

Related benchmarks:

math pow 3 vs multiply (version: 0)

Comparing performance of: pow vs mult

Created: one year ago by: Guest

Jump to the latest result

pow

mult

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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