Benchmark: Math.pow(b,e) vs b**e

Script Preparation code:

var baseExponentPairs = [...Array(1000).keys()].map((x) => [x, Math.floor(Math.random() * 100) + 1])

Tests:

Math.pow
var powTmp = baseExponentPairs.map(([base,exp]) => Math.pow(base,exp))
** (exponentiation operator)
var expTmp = baseExponentPairs.map(([base,exp]) => base ** exp)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math.pow
** (exponentiation operator)

Fastest: N/A

Slowest: N/A

Latest run results:

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

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I'll explain what's being tested in the provided JSON, describe the options compared, and discuss their pros and cons.

**What's being tested:**

The benchmark is comparing two ways to calculate exponentiation in JavaScript:

1. `Math.pow(b, e)` (the traditional way)
2. `b ** e` (using the exponentiation operator)

The test creates an array of base-exponent pairs, where each pair has a random base and exponent between 1 and 100. The benchmark then measures how long it takes to calculate the result of `Math.pow(b, e)` and `b ** e` for all pairs.

**Options compared:**

There are two options being compared:

* `Math.pow(b, e)`: This is the traditional way of calculating exponentiation in JavaScript.
* `b ** e`: This uses the exponentiation operator, which was introduced in ECMAScript 2016 (ES6).

**Pros and cons of each approach:**

* `Math.pow(b, e)`:
	+ Pros: Widely supported by older browsers and Node.js versions. Easy to understand and implement.
	+ Cons: May be slower than the exponentiation operator due to its implementation in JavaScript's Math library.
* `b ** e` (exponentiation operator):
	+ Pros: Faster execution speed, especially for large exponents. More modern and efficient way of calculating exponentiation.
	+ Cons: Requires support for ES6 or later in browsers and Node.js versions.

**Library and its purpose:**

None are mentioned in the provided JSON.

**Special JS feature or syntax:**

The benchmark uses a new JavaScript feature: the exponentiation operator `**`. This operator was introduced in ECMAScript 2016 (ES6) as a shorthand way of calculating exponentiation. It's faster than using `Math.pow(b, e)` and is more concise.

**Other alternatives:**

There are other ways to calculate exponentiation in JavaScript, such as:

* Using the `Math.exp()` function with logarithms: `Math.exp(Math.log(b) * e)`
* Using a recursive function or an iterative algorithm
* Using a library like MathJS or Exponent

However, these alternatives are not being compared in this benchmark.

In summary, the benchmark is testing the performance of two ways to calculate exponentiation in JavaScript: using the traditional `Math.pow(b, e)` method and the new exponentiation operator `b ** e`. The results show that the exponentiation operator is faster and more efficient.

Related benchmarks:

Math.pow(b,e) vs b**e (version: 0)

Comparing performance of: Math.pow vs ** (exponentiation operator)

Created: 4 years ago by: Registered User

Jump to the latest result

Math.pow

** (exponentiation operator)

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):