Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Math.pow(x,2) vs Math.sqrt(x)
(version: 0)
Comparing performance of:
Math.sqrt vs sqrt with Math.pow
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var numbers = Array.from(Array(10000), (_,x) => (Math.random()*x));
Tests:
Math.sqrt
numbers.forEach(x => Math.sqrt(x));
sqrt with Math.pow
numbers.forEach(x => Math.pow(x,2));
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Math.sqrt
sqrt with Math.pow
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15
Browser/OS:
Safari 17 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=493412" width="100%" height="500px"></iframe>
sqrt with Math.pow
2K/s
Math.sqrt
2K/s
View exact numbers
Test name
Executions per second
✓
sqrt with Math.pow
1,621 Ops/sec
Math.sqrt
1,566 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, compared, and analyzed. **What is being tested?** The benchmark measures the performance of two different ways to calculate the square root of numbers: `Math.sqrt` and using `Math.pow(x, 2)`. The test case generates an array of 10,000 random numbers and uses `forEach` to apply each calculation on the array. **Options compared** The main options being compared are: 1. **`Math.sqrt`**: This method calculates the square root directly. 2. **Using `Math.pow(x, 2)`**: This method uses the power operator (`^`) to calculate the square of a number and then takes the square root by dividing by 2. **Pros and cons** * **`Math.sqrt`**: + Pros: Generally faster and more efficient, as it directly calculates the square root without additional calculations. + Cons: May not be available in older browsers or environments that don't support modern math functions. * **Using `Math.pow(x, 2)`**: + Pros: More widely supported across different browsers and environments, as it's a basic arithmetic operation. + Cons: Generally slower than using `Math.sqrt` due to the additional calculations required. **Library usage** There is no explicit library mentioned in the benchmark definition or test cases. However, if we look at the JavaScript engine implementations (e.g., V8 for Chrome), they typically provide optimized implementations of math functions like `sqrt`. **Special JS feature or syntax** The benchmark doesn't explicitly use any special JavaScript features or syntax beyond standard ES6+ syntax and built-in methods. **Other alternatives** If you were to modify the benchmark, you might consider adding more test cases, such as: * Using other mathematical libraries (e.g., MathJax) for comparison. * Incorporating older browsers' implementations of math functions for compatibility testing. * Experimenting with different array sizes or data distributions to see how performance scales. Keep in mind that this is just a starting point, and the scope of alternatives will depend on your specific testing goals.
Related benchmarks
Math.pow(x,0.5) vs Math.sqrt(x)
Math.pow(x,0.5) vs Math.sqrt(x) 12
pow2 vs sqrt
Math.pow(x,0.5) vs Math.sqrt(x) 2
Comments
Confirm delete:
Do you really want to delete benchmark?