Benchmark: Double tilde vs Math.floor

Tests:

~~
~~10.12345
Math.floor
Math.floor(10.12345)

Historical Performance Data aggregated from 32 community runs

Desktop Results:

Chrome 32 runs

189.3M/s

Math.floor

19.7M/s

Fastest: ~~ (9.6x faster)

View exact numbers

✓ ~~: 189,329,152 ops/sec
• Math.floor: 19,696,676 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
~~
Math.floor

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36

Browser/OS: Chrome 152 on Mac OS X 10.15.7

View result in a separate tab

1029.3M/s

Math.floor

1022.1M/s

View exact numbers

Test name	Executions per second
✓ ~~	1,029,281,024 Ops/sec
Math.floor	1,022,122,432 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring the performance of JavaScript operations is crucial in ensuring that our code runs efficiently on different platforms and browsers. MeasuringThat.net provides a platform for developers to create and run microbenchmarks.

Let's break down the provided JSON data:

**Benchmark Definition**

The benchmark definition represents the operation being tested. In this case, there are two test cases:

1. `~~10.12345`: This is a JavaScript "tilde" operator, which returns the string representation of its operand without any decimal part (e.g., `~~10.12345` would return `"10"`). The tilde operator is used to convert floating-point numbers to integers.
2. `Math.floor(10.12345)`: This uses the built-in `Math.floor()` function, which returns the largest integer less than or equal to its argument.

**Options Compared**

The options being compared are:

1. Tilde (`~~`) operator
2. `Math.floor()`

Each of these approaches has its pros and cons:

* **Tilde (`~~`) operator:**
	+ Pros:
		- Simple and concise syntax.
		- Fast, as it's a built-in operation.
	+ Cons:
		- May not work correctly for negative numbers or non-integer values (e.g., `~~-10.12345` returns `-11`, but `Math.floor(-10.12345)` returns `-11`).
		- May not be supported in older browsers or environments that don't implement this operator.
* **`Math.floor()`**:
	+ Pros:
		- Robust and reliable, as it's a well-defined function with clear behavior for various input types.
		- Widely supported across different browsers and environments.
	+ Cons:
		- More verbose syntax compared to the tilde operator.

**Library and Purpose**

In this benchmark, there is no explicit library mentioned. However, both options use built-in JavaScript functions: `~~` (not a standard function; it's more of an operator) and `Math.floor()`.

**Special JS Feature or Syntax**

There are no special features or syntaxes being used in these test cases.

**Other Alternatives**

To measure the performance of the tilde (`~~`) operator, developers might consider using other approaches:

1. Using a library that implements this operator (although it's not explicitly mentioned here).
2. Writing a custom function to simulate the behavior of the tilde operator.

For `Math.floor()`, alternative methods could be:

1. Implementing your own rounding algorithm.
2. Using a library with an optimized version of the `Math.floor()` function.

**Alternative Benchmarking Tools and Resources**

Other alternatives for benchmarking JavaScript performance include:

1. WebpageTest (now known as GTmetrix): A popular tool for measuring web page load times and performance.
2. BrowserStack: Provides a cloud-based testing platform for cross-browser testing, including JavaScript performance benchmarks.
3. jsPerf: A built-in browser feature that allows developers to create and run JavaScript performance tests.
4. Microbenchmarking libraries like micro-benchmark (npm package) or benchmark.js (GitHub repository).

These tools can help you compare the performance of different JavaScript operations and identify potential bottlenecks in your code.

Double tilde vs Math.floor (version: 0) Benchmark.js

Comparing performance of: `~~ vs Math.floor`

Created: 5 years ago by: Guest

Go to the latest result

~~

Math.floor

Historical Performance Data aggregated from 32 community runs

Desktop Results:

Chrome 32 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Double tilde vs Math.floor (version: 0) Benchmark.js

Comparing performance of: ~~ vs Math.floor

Created: 5 years ago by: Guest

Go to the latest result

~~

Math.floor

Historical Performance Data aggregated from 32 community runs

Desktop Results:

Chrome 32 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Comparing performance of: `~~ vs Math.floor`