Benchmark: number format2 - MeasureThat.net

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/bignumber.js/9.0.1/bignumber.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function _numberWithCommas(strNum) {
    return strNum.replace(/\B(?<!\.\d*)(?=(\d{3})+(?!\d))/g, ",");
}

function numberFloorFormat (num, decimal, roundMode, fillingZero) {
    let rounded;
    if (roundMode === 'up') {
        rounded = _.ceil(num, decimal);
    } else if (roundMode === 'down') {
        rounded = _.floor(num, decimal);
    }

    let strNum;
    if (fillingZero) {
        strNum = rounded.toFixed(decimal);
    } else {
      	strNum = rounded.toString();
    }
    return _numberWithCommas(strNum);
};

function intlFormat() {
  return Intl.NumberFormat({roundingMode: 'floor', maximumFractionDigits: 8});
}

Tests:

C1
new BigNumber(12345678.123456).toFormat(8, BigNumber.ROUND_FLOOR)
S1
numberFloorFormat(12345678.123456, 8, 'down', true)
C2
new BigNumber(12345678.123456).toFormat(8, BigNumber.ROUND_CEIL)
S2
numberFloorFormat(12345678.123456, 8, 'up', true)
C3
new BigNumber(12345678.123456).dp(8, BigNumber.ROUND_CEIL).toFormat()
S3
numberFloorFormat(12345678.123456, 8, 'up', false)
INTL1
intlFormat(12345678.123456)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
C1
S1
C2
S2
C3
S3
INTL1

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's break down what is tested on the provided JSON and explain the different options compared.

**Benchmark Definition**

The benchmark definition is a JavaScript function that formats a number as a string with commas. There are four main functions being tested:

1. `numberFloorFormat`: This function takes a number, decimal places, round mode (up or down), and filling zero as input. It returns the formatted string.
2. `intlFormat`: This function uses the Internationalization API to format the number as a string with commas.
3. `_numberWithCommas`: This is a helper function that replaces the occurrences of `\d{3}` in the string with commas.

**Options Compared**

The four functions are compared on the following options:

* **Round mode**: `up` or `down`. The `up` mode rounds up to the nearest whole number, while `down` rounds down.
* **Filling zero**: `true` or `false`. If `true`, zeros are added to the left of the decimal point if necessary.

**Pros and Cons**

Here's a brief summary of each option:

1. **Number Floor Format (`numberFloorFormat`)**:
	* Pros: Can be customized with round mode and filling zero options.
	* Cons: May have performance issues due to string manipulation.
2. **Intl Format (`intlFormat`)**:
	* Pros: Uses the Internationalization API, which is more accurate for formatting numbers.
	* Cons: May not work correctly in older browsers or environments that don't support Intl.
3. `_numberWithCommas`**:
	* Pros: Simple and lightweight.
	* Cons: Limited customization options.

**Library: Bignumber.js**

The `Bignumber.js` library is used in the benchmark definition to perform large number arithmetic. It's a popular library for working with big numbers in JavaScript.

**Special JS Feature/Syntax**

The benchmark definition uses some special features and syntax, such as:

* `_`: The underscore function is imported from Lodash.
* `BigNumber`: The BigNumber class is used for large number arithmetic.
* `ROUND_FLOOR` and `ROUND_CEIL`: These are constants defined in the BigNumber.js library.

**Alternatives**

Some alternative libraries or approaches could be used instead of Bignumber.js:

* GMP (Greatest Common Divisor) libraries like Gmplib or mpmath
* JavaScript libraries for big number arithmetic, such as jbn or BigNum

Keep in mind that these alternatives might have different performance characteristics and may require additional setup.

I hope this explanation helps you understand the benchmark definition and the options being compared!

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
C1	1279969.1 Ops/sec
S1	1180172.0 Ops/sec
C2	1302774.1 Ops/sec
S2	1172450.0 Ops/sec
C3	1312314.9 Ops/sec
S3	1320206.8 Ops/sec
INTL1	216223.6 Ops/sec

Related benchmarks:

number format2 (version: 1)

Comparing performance of: C1 vs S1 vs C2 vs S2 vs C3 vs S3 vs INTL1

Created: one year ago by: Registered User

Jump to the latest result

C1

S1

C2

S2

C3

S3

INTL1

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):