Benchmark: Int Math.max compare

Script Preparation code:

var strA = "1688805315905";
var strB = "1688805315906";
var intA = 1688805315905;
var intB = 1688805315906;

Tests:

noParse
var res = Math.max(strB, strA, 100);
~~
var res = Math.max(~~strB, ~~strA, 100);
int
var res = Math.max(intA, intB, 100);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
noParse
~~
int

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/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Windows

View result in a separate tab

Test name	Executions per second
noParse	1606044.0 Ops/sec
~~	1661584.6 Ops/sec
int	2845995.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the benchmark and its test cases for you.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark definition, which includes:

1. **Script Preparation Code**: This section contains code snippets that are executed before running the benchmark. It sets up two variables `strA` and `strB`, which contain large integer strings.
2. **Html Preparation Code**: There is no HTML preparation code in this example.

**Test Cases**

The test cases are designed to compare different approaches for calling the `Math.max()` function:

1. **noParse**: This test case uses the original `Math.max()` function call without any modifications. It compares the execution time of the unmodified call.
2. **~~**: This test case uses the bitwise NOT operator (`~~`) to "parse" the integer strings `strA` and `strB`. The idea is that this approach would be faster because it avoids the overhead of parsing the string values.
3. **int**: This test case directly passes the integer values `intA` and `intB` to the `Math.max()` function.

**Library: `~~`**

The `~~` library is not a standard JavaScript library, but rather an operator that converts a value to its integer representation using bitwise operations. The idea behind using this library is to avoid parsing the string values and instead use bitwise operations to get the integer equivalent.

**Pros and Cons of Different Approaches**

1. **noParse**: This approach uses the original `Math.max()` function call, which may have some overhead due to parsing and type checking.
	* Pros: Easy to understand and maintain.
	* Cons: May be slower than other approaches.
2. **~~**: This approach uses the `~~` library to convert string values to integers using bitwise operations.
	* Pros: Can potentially be faster since it avoids parsing and type checking overhead.
	* Cons: Requires an external library, which may add complexity.
3. **int**: This approach directly passes integer values to `Math.max()`, skipping any type checking or parsing.
	* Pros: Simple and efficient.
	* Cons: May not work correctly if the input values are not integers.

**Other Alternatives**

If you were to consider other approaches, some alternatives could be:

1. **using a typed array**: Instead of using strings, you could use a typed array like `Uint32Array` or `Int32Array` to represent the integer values.
2. **using a library like Fast.js**: Fast.js is a JavaScript engine that provides optimized implementations for common functions like `Math.max()`. It may offer better performance than the standard JavaScript implementation.
3. **using a specialized library for benchmarking**: There are libraries available specifically designed for microbenchmarking, such as `BenchmarkJS` or `benchmark`.

Keep in mind that the choice of approach depends on your specific use case and requirements.

I hope this explanation helps you understand the benchmark and its test cases!

Related benchmarks:

Int Math.max compare (version: 0)

Comparing performance of: noParse vs ~~ vs int

Created: one year ago by: Guest

Jump to the latest result

noParse

~~

int

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):