Benchmark: Round Comparison

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var x = Math.random() * 100;
var runs = 1000;

Tests:

lodash round
for (var i = 0; i < runs; i++) { _.round(x); }
lodash round 1
for (var i = 0; i < runs; i++) { _.round(x, 1); }
toFixed()
for (var i = 0; i < runs; i++) { x.toFixed(); }
toFixed(1)
for (var i = 0; i < runs; i++) { x.toFixed(1); }
Math.round()
for (var i = 0; i < runs; i++) { Math.round(x); }
Math.round(1)
for (var i = 0; i < runs; i++) { Math.round(x * 10) / 10; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash round
lodash round 1
toFixed()
toFixed(1)
Math.round()
Math.round(1)

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/113.0.0.0 Safari/537.36

Browser/OS: Chrome 113 on Windows

View result in a separate tab

Test name	Executions per second
lodash round	4219.7 Ops/sec
lodash round 1	1127.1 Ops/sec
toFixed()	4041.6 Ops/sec
toFixed(1)	4162.0 Ops/sec
Math.round()	4860.7 Ops/sec
Math.round(1)	4793.8 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmark Definition JSON**

The provided benchmark definition json contains information about the test itself:

*   **Name**: "Round Comparison" - This is the name given to the benchmark.
*   **Description**: null - There's no description provided for this benchmark.
*   **Script Preparation Code**: This line of code sets a random variable `x` to a value between 0 and 100, and also defines the number of runs as 1000. The script preparation code is used by MeasureThat.net to run the benchmark multiple times and take an average of the results.

**Html Preparation Code**

The html preparation code includes a link to the Lodash library, which is a popular JavaScript utility library that provides many functions for working with data structures and functional programming. The specific version used here is v4.17.5.

This library is used because the benchmark involves using Lodash's `round` function.

**Individual Test Cases**

There are six individual test cases:

*   **"lodash round"`**: This test case uses Lodash's `round` function to round the variable `x`. The first test case checks how fast this function runs on its own.
*   **"lodash round 1"`**: Similar to the previous test case, but also takes an additional argument of 1. It seems like MeasureThat.net is comparing this with the original Lodash round function to see if the argument makes a difference.
*   **"toFixed()"`: This test case uses JavaScript's built-in `toFixed` method to format the variable `x`. The first test case checks how fast this method runs on its own. The second test case, "toFixed(1)", is similar but with an additional argument of 1.

*   **"Math.round()"**: Similar to the previous test cases, but uses JavaScript's built-in `round` function (although note that in JavaScript, the former and the latter are equivalent).
*   **"Math.round(1)"`: This test case checks how fast the first variant of the round() function runs with an argument.

Related benchmarks:

Round Comparison (version: 0)

Comparing performance of: lodash round vs lodash round 1 vs toFixed() vs toFixed(1) vs Math.round() vs Math.round(1)

Created: one year ago by: Guest

Jump to the latest result

lodash round

lodash round 1

toFixed()

toFixed(1)

Math.round()

Math.round(1)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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