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Math.max vs. If vs. Ternary Assignment
(version: 0)
Comparing performance of:
Math.max vs If vs Ternary
Created:
5 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
this.number = Math.random() * 1000
Tests:
Math.max
let foo = Math.max(500, this.number)
If
let foo = this.number; if (foo < 500) { foo = 500; }
Ternary
let foo = this.number < 500 ? 500 : this.number
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Math.max
If
Ternary
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its results. **Benchmark Description:** The benchmark measures the performance difference between three approaches to check if a number is less than 500: 1. `Math.max(500, this.number)` 2. Conditional If statement: `if (foo < 500) { foo = 500; }` 3. Ternary assignment: `let foo = this.number < 500 ? 500 : this.number` **Comparison of Approaches:** * **Ternary Assignment**: This approach uses a single expression to assign a value to `foo` based on the condition. It's concise and efficient. + Pros: Compact, easy to read, and likely optimized by JavaScript engines. + Cons: May not be as performant as other approaches due to the overhead of evaluating the condition. * **Conditional If statement**: This approach uses a traditional if-else structure to assign a value to `foo`. + Pros: Easy to understand and maintain, allows for more complex logic. + Cons: More verbose than ternary assignment, may not be optimized as well by JavaScript engines. * **Math.max**: This approach uses the built-in `Math.max` function with two arguments. It's a simple and straightforward way to achieve the same result. + Pros: Easy to understand, leverages built-in functionality. + Cons: May not be as performant as other approaches due to the overhead of calling a built-in function. **Other Considerations:** * **Library usage**: The benchmark uses `Math.random()` to generate a random number for testing. This is a standard library function in JavaScript, and its performance impact is relatively small. * **Special JS features/syntax**: None mentioned explicitly, but the use of ES6+ syntax (e.g., `let`, arrow functions) assumes support for modern JavaScript features. **Benchmark Results:** The latest benchmark results show that: 1. Ternary assignment has the highest execution rate (`ExecutionsPerSecond`): 839,157,056. 2. Conditional If statement is slightly slower: 835,490,432. 3. `Math.max` has a lower execution rate: 8,075,611. **Alternatives:** Other approaches to check if a number is less than 500 could include: * Using the `<` operator directly on the numbers (e.g., `this.number < 500`) * Utilizing bitwise operations (e.g., using `>>` and `&` operators) * Implementing a custom function or method for comparison Keep in mind that these alternatives might not be as concise or performant as the approaches used in the benchmark.
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