Benchmark: Finding the length of a number5

Script Preparation code:

window.number = 1231191945.678

Tests:

String conversion
const result = number.toString().length
Pure math
const result = Math.ceil(Math.log10(number + 1));
Concatenation
const result = (number + "").length

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String conversion
Pure math
Concatenation

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 MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Definition**

The provided JSON defines a benchmark with three test cases:

1. **Finding the length of a number**: The script preparation code sets up a global variable `window.number` to be used as input for the benchmark.
2. **String conversion**: This test case converts the global `number` variable to a string using the `toString()` method and measures its length.
3. **Pure math**: This test case calculates the ceiling of the base-10 logarithm of `number + 1` using `Math.ceil()` and `Math.log10()`, then takes the result's length.

**Options Compared**

The benchmark is comparing three different approaches to solve each problem:

* **String conversion (Test Case 2)**:
	+ Method: Using `toString()` to convert `number` to a string.
	+ Alternative approach: Concatenating `number` with an empty string (`''`) using `(number + '').length`.
* **Pure math (Test Case 3)**:
	+ Method: Calculating the ceiling of the base-10 logarithm of `number + 1`.
	+ Alternative approach: Not specified in this benchmark definition.

**Pros and Cons**

Here are some pros and cons for each approach:

* **String conversion (Test Case 2)**:
	+ Pros:
		- Simple and straightforward.
		- Likely to be optimized by JavaScript engines.
	+ Cons:
		- May not work correctly with very large numbers or special values.
		- May have performance overhead due to string creation.
* **Concatenation (Test Case 2)**:
	+ Pros:
		- Avoids potential issues with `toString()` for very large numbers.
	+ Cons:
		- More complex and may not be optimized as well as the original approach.

**Library Usage**

There is no explicit library mentioned in this benchmark definition, but it's worth noting that `Math` functions are part of the JavaScript standard library. The `window.number` assignment is likely a custom initialization step to prepare the input data for testing.

**Special JS Features or Syntax**

This benchmark does not explicitly use any special JavaScript features or syntax beyond what's required by the problem statement. However, it's essential to note that MeasureThat.net uses a specialized test runner and may include additional instrumentation or optimizations to facilitate efficient execution of benchmarks.

**Alternative Approaches**

For this specific benchmark, alternative approaches might involve:

* Using a different data type for `number`, such as an integer or a float, to see how JavaScript handles conversions.
* Adding more complex operations or conditions to the test cases to simulate real-world scenarios.
* Implementing custom optimization techniques, like caching or memoization, to reduce execution time.

Keep in mind that these alternatives would require significant changes to the benchmark definition and might not be representative of typical use cases.

Related benchmarks:

Finding the length of a number5 (version: 0)

Comparing performance of: String conversion vs Pure math vs Concatenation

Created: 3 years ago by: Guest

Jump to the latest result

String conversion

Pure math

Concatenation

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):