Benchmark: toFixed() vs String(Math.floor()) vs Math.floor().toString()

Script Preparation code:

var someFloat = 123.456;

Tests:

toFixed()
someFloat.toFixed();
String(Math.floor())
String(Math.floor(someFloat));
Math.floor().toString()
Math.floor(someFloat).toString()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
toFixed()
String(Math.floor())
Math.floor().toString()

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The benchmark is designed to compare three different approaches for converting a floating-point number to a string:

1. `toFixed()`
2. `String(Math.floor())`
3. `Math.floor().toString()`

In essence, we're testing the performance of these methods in JavaScript.

**Options Compared**

Here are the options being compared:

* `toFixed()`: uses the `toFixed()` method to convert the floating-point number to a string with a specified precision.
* `String(Math.floor())`: uses the `Math.floor()` function to truncate the decimal part and then converts the result to a string using the `String()` constructor.
* `Math.floor().toString()`: similar to the previous option, but uses the `Math.floor()` function directly before converting the result to a string.

**Pros and Cons of Each Approach**

1. **toFixed()**:
	* Pros: can specify precision, handles decimal points accurately.
	* Cons: may not be necessary for simple numeric conversions, can lead to unnecessary overhead due to the conversion process.
2. **String(Math.floor())**:
	* Pros: simple, easy to understand, and widely supported.
	* Cons: truncates decimal parts, may lose precision, and can be slower than `toFixed()` due to the function call.
3. **Math.floor().toString()**:
	* Pros: avoids unnecessary function calls compared to `String(Math.floor())`, still truncates decimal parts.
	* Cons: less readable and maintainable than `toFixed()`, can lead to unexpected behavior if not used carefully.

**Library Usage**

None of the provided benchmark definitions use any libraries or external dependencies. The tests are purely built-in JavaScript functions.

**Special JS Features/Syntax (None)**

There is no special JavaScript feature or syntax being tested in this benchmark. All three approaches rely on standard JavaScript methods and operators.

**Other Alternatives**

If you wanted to test alternative approaches, some options could be:

* Using a library like ` numeral.js` for more precise control over decimal points
* Implementing a custom function using bitwise operations or other low-level techniques to convert floating-point numbers to strings
* Comparing performance with other string conversion methods, such as `toString()` on the number object

These alternatives would likely require significant changes to the benchmark definition and implementation.

Overall, the MeasureThat.net benchmark provides a simple yet informative way to compare the performance of three common approaches for converting floating-point numbers to strings in JavaScript.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Browser/OS: Firefox 106 on Windows

View result in a separate tab

Test name	Executions per second
toFixed()	17400008.0 Ops/sec
String(Math.floor())	1476199168.0 Ops/sec
Math.floor().toString()	1476567936.0 Ops/sec

Related benchmarks:

toFixed() vs String(Math.floor()) vs Math.floor().toString() (version: 0)

Comparing performance of: toFixed() vs String(Math.floor()) vs Math.floor().toString()

Created: 2 years ago by: Guest

Jump to the latest result

toFixed()

String(Math.floor())

Math.floor().toString()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):