Benchmark: String to Int of Arbitrary Precision

Tests:

String Manipulation
function strToInt(num, decimals) { decIndex = num.indexOf('.'); if (decIndex >= 0) { // console.log('contains decimal point'); curDecimals = (num.length - decIndex - 1); if (decimals > curDecimals) { // console.log('too few decimal places'); num += '0'.repeat(decimals - curDecimals); } else if (decimals < curDecimals) { // console.log('too many decimal places'); num = num.slice(0, decimals - curDecimals); } num = _.replace(num, '.', ''); } else { // console.log('no decimal point'); num += '0'.repeat(decimals); } return parseInt(num); } strToInt('12.47', 2); strToInt('12.43', 2); strToInt('12.1', 2); strToInt('12', 2);
Float Manipulation, round all
function strToInt(num, multiplier) { return Math.round(parseFloat(num) * multiplier); } strToInt('12.47', 100); strToInt('12.43', 100); strToInt('12.1', 100); strToInt('12', 100);
Float, check for decimal
function strToInt(num, multiplier) { if (num.includes('.')) { return Math.round(parseFloat(num) * multiplier); } else { return parseInt(num) * multiplier; } } strToInt('12.47', 100); strToInt('12.43', 100); strToInt('12.1', 100); strToInt('12', 100);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String Manipulation
Float Manipulation, round all
Float, check for decimal

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Browser/OS: Chrome 53 on Windows

View result in a separate tab

Test name	Executions per second
String Manipulation	121074.7 Ops/sec
Float Manipulation, round all	449292.1 Ops/sec
Float, check for decimal	423483.7 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the benchmark.

**Benchmark Definition**

The benchmark measures the execution time of JavaScript functions that convert strings to integers or floats with varying precision.

**Options Compared**

There are three test cases:

1. **String Manipulation**: This test case checks the execution time of a custom function `strToInt` that takes a string and an optional number of decimal places as input. The function replaces dots in the string, converts the remaining characters to integers, and returns the result.
2. **Float Manipulation, round all**: This test case measures the execution time of another custom function `strToInt` that takes a string and a multiplier as input. The function parses the string as a float, multiplies it by the multiplier, rounds the result using `Math.round`, and returns the result.
3. **Float, check for decimal**: This test case is similar to the previous one, but with an additional check for the presence of a decimal point in the input string.

**Pros and Cons**

* **String Manipulation**:
	+ Pros: Simple implementation, easy to understand.
	+ Cons: May be slower due to the custom implementation and string manipulation.
* **Float Manipulation, round all**:
	+ Pros: Uses built-in `Math.round` function, which is optimized for performance.
	+ Cons: Assumes a fixed multiplier value, may not work well with varying multipliers.
* **Float, check for decimal**:
	+ Pros: Similar to the previous test case but with an additional check.
	+ Cons: May be slower due to the additional check.

**Library Used**

None explicitly mentioned in the benchmark definition, but `_.replace` is used in one of the test cases. `_` likely refers to the Lodash library, which provides utility functions for string manipulation and other tasks. However, since it's not explicitly required by the JavaScript code, it might be considered optional.

**Special JS Feature/Syntax**

None mentioned, as the benchmark tests are focused on JavaScript implementation details rather than new features or syntax.

**Other Considerations**

* The benchmark uses a custom function `strToInt` for each test case, which may indicate that the author wants to test the specific implementation details of this function.
* The benchmark results show different execution times for each test case, suggesting that there are performance differences between the three implementations.
* The use of Chrome 53 as the browser and Windows 10 as the operating system might limit the applicability of the benchmark results.

**Alternatives**

If you were to recreate a similar benchmark, you could consider the following alternatives:

1. Use built-in JavaScript functions for string manipulation, such as `parseInt` or `parseFloat`, which are likely to be faster than custom implementations.
2. Test with different browsers and operating systems to ensure compatibility and performance consistency.
3. Consider adding more test cases that cover additional edge cases, such as negative numbers, integers, or very large values.
4. Use a more comprehensive testing framework to measure execution time, such as Jest or Mocha, which provide better metrics and error handling.

Related benchmarks:

String to Int of Arbitrary Precision (version: 1)

Comparing performance of: String Manipulation vs Float Manipulation, round all vs Float, check for decimal

Created: 8 years ago by: Registered User

Jump to the latest result

String Manipulation

Float Manipulation, round all

Float, check for decimal

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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