Benchmark: multiplication vs parseInt vs Number vs bitwise

Tests:

multiplication
const num = 10 * (10 ** 2) + 10
parseInt
const num = parseInt("10" + "10")
Number conversion
const num = Number("10" + "10")
double bitwise not
~~("10"+"10")
bitwise or
("10" + "10") | 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
multiplication
parseInt
Number conversion
double bitwise not
bitwise or

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/110.0.0.0 Safari/537.36

Browser/OS: Chrome 110 on Windows

View result in a separate tab

Test name	Executions per second
multiplication	974328640.0 Ops/sec
parseInt	6108550.0 Ops/sec
Number conversion	8776264.0 Ops/sec
double bitwise not	1039539776.0 Ops/sec
bitwise or	1040582976.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark that tests different methods for performing arithmetic operations: multiplication, parseInt conversion, Number conversion, bitwise NOT operation, and bitwise OR operation.

**Options Compared**

The benchmark compares five different approaches:

1. **Multiplication**: Performing multiplication using the `*` operator.
2. **parseInt conversion**: Converting a string to an integer using the `parseInt()` function.
3. **Number conversion**: Converting a string to a number using the `Number()` function.
4. **Bitwise NOT operation** (`~~`): Using the bitwise NOT operator (`~`) to perform subtraction, which can be equivalent to multiplication in some cases.
5. **Bitwise OR operation** (`| 0`): Performing an arithmetic operation using the bitwise OR operator (`|`) followed by a bitwise AND operator (`&`) with zero (`0`).

**Pros and Cons of Each Approach**

Here's a brief overview of the pros and cons of each approach:

1. **Multiplication**: Simple and straightforward, but may not be as efficient for large numbers due to the need to perform additional operations.
	* Pros: Easy to understand and implement, suitable for small numbers.
	* Cons: May not be optimized for performance with large numbers.
2. **parseInt conversion**: Can be faster than multiplication for large numbers, but may have overhead due to function calls.
	* Pros: Can be faster for large numbers, less overhead compared to `Number()` conversion.
	* Cons: Function call overhead, may not work correctly for all inputs (e.g., non-numeric strings).
3. **Number conversion**: Similar to `parseInt` conversion, but with an additional step of parsing the string.
	* Pros: May be faster than `parseInt` conversion due to fewer function calls, works correctly for all numeric strings.
	* Cons: More overhead compared to `parseInt`, may not work correctly for non-numeric strings.
4. **Bitwise NOT operation** (`~~`): Can be equivalent to multiplication in some cases and has a lower overhead compared to other methods.
	* Pros: May be faster than traditional multiplication, has lower overhead.
	* Cons: Less intuitive and harder to understand, may not work correctly for all inputs (e.g., non-integer values).
5. **Bitwise OR operation** (`| 0`): Can take advantage of CPU optimizations for bitwise operations, but is less common in practice.
	* Pros: May be faster than traditional multiplication due to CPU optimizations, more concise syntax.
	* Cons: Less intuitive and harder to understand, requires specific hardware support.

**Library Used**

None. The benchmark only uses built-in JavaScript operators and functions.

**Special JS Features or Syntax**

There are no special JS features or syntax used in this benchmark. All operations use standard JavaScript syntax and operators.

**Alternative Approaches**

Other alternative approaches for performing arithmetic operations include:

1. **Big Integers**: Using libraries like `BigInt` to perform arbitrary-precision arithmetic, which can be more efficient than traditional multiplication methods.
2. **Arithmetic Instructions**: Using CPU-specific instructions like `mulss` ( multiply signed 32-bit integer ) or `muls` ( multiply unsigned 32-bit integer ) for optimized performance.
3. **Parallel Processing**: Breaking down the calculation into smaller tasks and executing them in parallel using Web Workers or other concurrency mechanisms to take advantage of multi-core processors.

Keep in mind that these alternative approaches may require more expertise, resources, and hardware support compared to traditional JavaScript methods used in this benchmark.

Related benchmarks:

multiplication vs parseInt vs Number vs bitwise (version: 0)

Comparing performance of: multiplication vs parseInt vs Number conversion vs double bitwise not vs bitwise or

Created: 2 years ago by: Guest

Jump to the latest result

multiplication

parseInt

Number conversion

double bitwise not

bitwise or

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):