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math pow vs multiply vs multiply2
(version: 0)
Comparing performance of:
Math.pow vs Multiply vs Multiply2
Created:
6 years ago
by:
Registered User
Go to the latest result
Tests:
Math.pow
var x = Math.pow(54,2);
Multiply
var y = 54*54
Multiply2
var z = 54**2
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Math.pow
Multiply
Multiply2
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/136.0.0.0 Safari/537.36
Browser/OS:
Chrome 136 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=604354" width="100%" height="500px"></iframe>
Multiply
189.6M/s
Multiply2
177.6M/s
Math.pow
165.2M/s
View exact numbers
Test name
Executions per second
✓
Multiply
189,572,752 Ops/sec
Multiply2
177,601,968 Ops/sec
Math.pow
165,248,832 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks and analyze what's being tested on MeasureThat.net. **Benchmark Definition** The benchmark definition provides information about the test case. In this case, there is only one benchmark definition: `"var x = Math.pow(54,2);"` This code defines a variable `x` by raising 54 to the power of 2 using the `Math.pow()` function. **Test Cases** There are three individual test cases: 1. **`Math.pow`**: This test case runs the original benchmark definition: `var x = Math.pow(54,2);`. 2. **`Multiply`**: This test case uses a different approach to calculate the square of 54: `var y = 54*54`. This is equivalent to using the `Math.pow()` function. 3. **`Multiply2`**: This test case uses exponentiation syntax (`**`) instead of the `Math.pow()` function or multiplication: `var z = 54**2`. **Options Compared** In this benchmark, we have three options compared: * `Math.pow()`: Uses the `Math.pow()` function to raise a number to a power. * `Multiply`: Uses simple multiplication to calculate the square of a number. * `Multiply2`: Uses exponentiation syntax (`**)` to raise a number to a power. **Pros and Cons** Here's a brief analysis of each approach: * **`Math.pow()`**: This is the most efficient way to calculate powers, as it's implemented in native code by the JavaScript engine. It's also widely supported across different browsers. * **`Multiply`**: This approach can be slower than `Math.pow()`, especially for large numbers, since it involves repeated multiplication. However, it's simple and easy to implement. * **`Multiply2`**: This syntax is more concise than `Math.pow()` but might not be as efficient due to the overhead of parsing and executing exponentiation expressions. **Library** There are no libraries used in these test cases. **Special JS Features or Syntax** The only special feature used here is the exponentiation syntax (`**`) introduced in ECMAScript 2016. This syntax allows you to raise a number to a power using a simple symbol, making code more concise and readable. **Other Alternatives** If we were to consider alternative approaches for calculating powers, some options might include: * **`Math.sqrt()`**: Using the square root function to calculate the square of a number is not efficient, as it involves multiple operations. * **`Bitwise shift`**: For small numbers, you could use bitwise shift operators to calculate powers efficiently. However, this approach becomes impractical for large numbers. * **Custom implementations**: You could also implement your own power calculation functions using loop-based or recursive approaches. Keep in mind that these alternative approaches might not be as efficient or widely supported as the `Math.pow()` function. Overall, MeasureThat.net provides a useful platform for testing and comparing different JavaScript performance optimization techniques.
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