Benchmark: Math vs tern - MeasureThat.net

Script Preparation code:

this.number = Math.random() * 1000

Tests:

Math
const number = this.number return Math.max(500, number)
Tern
const number = this.number return number <= 500 ? number : 500

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math
Tern

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into explaining the JavaScript microbenchmark on MeasureThat.net.

**Benchmark Overview**

The benchmark tests two approaches to compare values: Math.max() and ternary operator (also known as short-circuiting).

**Script Preparation Code**
```javascript
this.number = Math.random() * 1000;
```
This line generates a random number between 0 and 1000, which is then assigned to the `number` variable.

**Html Preparation Code**
Since there's no HTML preparation code, we can assume that the benchmark only tests the JavaScript execution time.

**Test Cases**

There are two test cases:

1. **Math.max()**: This approach uses the built-in Math.max() function to compare the value of `number` with 500.
```javascript
const number = this.number;
return Math.max(500, number);
```
2. **Ternary Operator (Short-Circuiting)**: This approach uses a ternary operator to check if `number` is less than or equal to 500. If true, it returns the value of `number`, otherwise, it returns 500.
```javascript
const number = this.number;
return number <= 500 ? number : 500;
```
**Pros and Cons**

* **Math.max()**: This approach has a clear, well-defined behavior for any input value. However, since JavaScript is dynamic typing, this means the function's performance might vary depending on the type of `number` (e.g., integer vs float).
	+ Pros: Simple to implement and understand.
	+ Cons: May be slower due to potential type conversions or comparisons.
* **Ternary Operator**: This approach is concise and can take advantage of JavaScript's short-circuiting behavior. However, it might lead to false positives or edge cases if the `||` operator is not optimized properly.
	+ Pros: Can be faster in some cases due to optimization.
	+ Cons: May have subtle performance issues or bugs.

**Library**

None are used in these test cases. The JavaScript code only depends on built-in functions and data types.

**Special JS Feature/Syntax**

There's no special JavaScript feature or syntax being tested here, just standard JavaScript expressions.

**Other Alternatives**

Alternative approaches to compare values could be:

1. `if (number <= 500) { return number; } else { return 500; }`: This approach is similar to the ternary operator but uses a more verbose `if` statement.
2. Using a helper function: `const compare = (x, y) => x <= y ? x : y; const result = compare(number, 500);`. This approach separates the comparison logic into its own function.

Keep in mind that these alternatives may have different performance characteristics or trade-offs depending on the specific use case.

Related benchmarks:

Math vs tern (version: 0)

Comparing performance of: Math vs Tern

Created: 5 years ago by: Guest

Jump to the latest result

Math

Tern

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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