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Math.pow vs ** vs * vs for loop
(version: 0)
Benchmark.js
Comparing performance of:
pow vs ** vs * vs for loop
Created:
2 years ago
by:
Guest
Go to the latest result
Tests:
pow
var tmp = Math.pow(6, 21);
**
var tmp = 6 ** 21;
*
var tmp = 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6;
for loop
var tmp = 6; var pow = tmp; for (let i = 21; i > 1; i--) { tmp = tmp * pow; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
pow
**
*
for loop
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/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
Browser/OS:
Chrome 119 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=498675" width="100%" height="500px"></iframe>
**
1044.2M/s
*
1031.0M/s
for loop
95.1M/s
pow
18.3M/s
View exact numbers
Test name
Executions per second
✓
**
1,044,220,160 Ops/sec
*
1,030,964,928 Ops/sec
for loop
95,104,360 Ops/sec
pow
18,280,768 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 compares the performance of four different approaches to calculate the result of `6^21`: 1. **Math.pow**: Using the built-in `Math.pow` function to raise 6 to the power of 21. 2. **** (Exponentiation Operator)**: Using the new exponentiation operator (`**`) introduced in ECMAScript 2016. 3. *** (Multiplication Operator)**: Repeatedly multiplying 6 by itself 21 times. 4. **for loop**: Using a traditional `for` loop to calculate the result. **Options Compared** The benchmark compares the performance of these four approaches, which can be described as: * **Efficiency**: How quickly each approach can produce the result. * **Readability**: How easy it is to understand and maintain the code using each approach. **Pros and Cons of Each Approach** 1. **Math.pow**: * Pros: Fast and efficient, widely supported by browsers and Node.js. * Cons: May not be as readable or intuitive for some developers. 2. **** (Exponentiation Operator)**: * Pros: Modern and concise, easy to read and understand. * Cons: Not supported in older browsers or versions of JavaScript. 3. *** (Multiplication Operator)**: * Pros: Simple and straightforward, can be more readable for some developers. * Cons: Slowest approach due to repeated multiplications. 4. **for loop**: * Pros: Flexible and customizable, can be used in a variety of situations. * Cons: More verbose and less efficient than other approaches. **Library/Functionality Used** None of the approaches rely on external libraries or functions, making them suitable for use in various JavaScript environments. **Special JS Features/Syntax** The `**` exponentiation operator is a new feature introduced in ECMAScript 2016. It's not supported in older browsers or versions of JavaScript, which is why it's not included in the benchmark result. **Other Alternatives** Some other approaches to calculate `6^21` might include: * Using a library like `mathjs` or `scimath` that provides specialized math functions. * Implementing a custom exponentiation algorithm using bitwise operations. * Using a library like `numjs` that provides optimized mathematical functions. Keep in mind that these alternatives are not part of the standard JavaScript specification and may not be widely supported.
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