Benchmark: confronto bit - MeasureThat.net

Script Preparation code:

const bit1 = 0b00000001;
const bit2 = 0b00000010;
const bit3 = 0b00000100;

const bit4 = 1;
const bit5 = 2;
const bit6 = 4;

const result = 3;

Tests:

binary
const result = 3; const bit1 = 0b00000001; result & bit1 ? 1 : 0;
decimal
const result = 3; const bit4 = 1; result & bit4 ? 1 : 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
binary
decimal

Fastest: N/A

Slowest: N/A

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/126.0.0.0 Safari/537.36

Browser/OS: Chrome 126 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
binary	90055000.0 Ops/sec
decimal	92464592.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares two different approaches to perform bitwise AND operations on integers in JavaScript.

**Approach 1: Using Bitwise Operators (Binary)**

In this approach, the test case uses the `&` operator to perform a bitwise AND operation between two integers. The operands are defined as:

* `bit1`: a binary number represented as a hexadecimal value (`0b00000001`)
* `result`: an integer initialized with value `3`

The benchmark checks the execution time of this approach.

**Approach 2: Using Conditional Statements (Decimal)**

In this approach, the test case uses conditional statements to achieve the same result. The operands are defined as:

* `bit4`: a decimal number (`1`)
* `result`: an integer initialized with value `3`

The benchmark checks the execution time of this approach.

**Library and Special JS Features**

There are no external libraries used in these test cases. Additionally, there are no special JavaScript features or syntax (e.g., async/await, generators) being tested.

**Pros and Cons of Each Approach**

* **Binary Approach**
	+ Pros:
		- Typically faster execution time due to the simplicity of bitwise operations
		- Compiler optimization may occur for this specific operation
	+ Cons:
		- May not be as readable or maintainable for complex expressions
		- Error-prone if incorrect binary value is used
* **Decimal Approach**
	+ Pros:
		- Easier to understand and debug due to the simplicity of conditional statements
		- Less prone to errors, but may have slower execution time

**Other Considerations**

When choosing between these two approaches, consider the specific requirements of your project:

* If speed is critical, the binary approach might be a better choice.
* If readability and maintainability are more important, the decimal approach might be a better fit.

**Alternative Approaches**

Other possible approaches for performing bitwise AND operations in JavaScript include:

1. Using `bitwiseAnd` function from the `vm` module (for V8 engine): This function is optimized for performance and can be used instead of `&`.
2. Using a library like `bitwise`: A lightweight library that provides various bitwise operators.
3. Implementing a custom bitwise AND implementation using assembly language or other low-level languages.

However, these alternatives might not be suitable for every project, and the choice ultimately depends on your specific needs and requirements.

Related benchmarks:

confronto bit (version: 0)

Comparing performance of: binary vs decimal

Created: one year ago by: Guest

Jump to the latest result

binary

decimal

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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