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Clamping: Math.mix + Math.max vs if
(version: 0)
Comparing performance of:
Math.min + Math.max vs if
Created:
9 years ago
by:
Registered User
Go to the latest result
Script Preparation code:
this.number = Math.random() * 1000;
Tests:
Math.min + Math.max
return Math.max(250, Math.min(750, this.number));
if
if(this.number < 250) return 250; if(this.number > 750) return 750; return this.number;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Math.min + Math.max
if
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; rv:140.0) Gecko/20100101 Firefox/140.0
Browser/OS:
Firefox 140 on Mac OS X 10.15
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<iframe src="https://measurethat.net/Embed?id=614279" width="100%" height="500px"></iframe>
if
927.5M/s
Math.min + Math.max
125.7M/s
View exact numbers
Test name
Executions per second
✓
if
927,519,872 Ops/sec
Math.min + Math.max
125,737,472 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Overview** The benchmark, named "Clamping: Math.mix + Math.max vs if", compares two approaches to clamp (i.e., limit) a value within a specific range. The clamping function takes an input value (`this.number`) and returns the clamped value. **Approaches Compared** Two approaches are compared: 1. **Math.min + Math.max**: This approach uses the built-in `Math.min` and `Math.max` functions to clamp the value. * Pros: Simple, straightforward, and widely supported by JavaScript engines. * Cons: May have performance overhead due to function calls, and might not be as efficient as a simple if-else statement. 2. **if-else Statement**: This approach uses an if-else statement to check the condition and return the clamped value. * Pros: Can be more efficient than using built-in functions, especially for small values or optimized engines. * Cons: May have performance overhead due to branching, and might not be as readable or maintainable. **Library** In this benchmark, the `Math` library is used. The `Math` library provides various mathematical functions, including `min`, `max`, and other trigonometric, exponential, logarithmic, and root functions. **JavaScript Features/Syntax** This benchmark does not use any special JavaScript features or syntax beyond what's typically available in modern browsers. **Other Considerations** When choosing between these approaches, consider the trade-offs: * Performance: If you need to perform clamping operations frequently, using a simple if-else statement might be more efficient. However, for small values or optimized engines, using built-in functions like `Math.min` and `Math.max` might still be acceptable. * Code Readability/Maintainability: If the value range is small and the condition is straightforward, an if-else statement can make the code more readable. For larger ranges or complex conditions, using built-in functions might be more maintainable. **Alternatives** Other approaches to clamping values could include: 1. Using bitwise operators (e.g., `x &= 0xFF` for 8-bit unsigned integers) 2. Creating a custom clamping function 3. Using a different data structure (e.g., an enum or a finite map) to represent the value range
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