let x = 99 * 99;
let x = 99 ** 2;
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Multiplication | |
Power operator |
Test name | Executions per second |
---|---|
Multiplication | 776797760.0 Ops/sec |
Power operator | 767484032.0 Ops/sec |
Let's break down the provided benchmark and explain what's being tested.
Benchmark Definition
The benchmark is defined by a JSON object with three properties:
Name
: The name of the benchmark, which is "Multiply vs power operator **".Description
: A brief description of the benchmark, which compares the multiplication of (n x n)
versus (n ** 2)
.Script Preparation Code
and Html Preparation Code
: These fields are empty, indicating that no custom code needs to be prepared for the benchmark.Individual Test Cases
The benchmark consists of two test cases:
Multiplication
: This test case measures the execution time of the expression let x = 99 * 99;
.Power operator
: This test case measures the execution time of the expression let x = 99 ** 2;
.Options Compared
The benchmark compares two options for performing multiplication:
*
operator: The traditional way of multiplying two numbers.**
operator: A shorthand way of raising a number to a power.Pros and Cons of Each Approach
*
operator:**
operator: Library Usage
There is no explicit library usage in this benchmark. However, it's worth noting that the **
operator (exponentiation) is a built-in operator in JavaScript and is not specific to any third-party library.
Special JS Feature/Syntax
The **
operator (exponentiation) is a special feature of JavaScript syntax. It was introduced in ECMAScript 2015 (ES6) as a shorthand way to raise a number to a power.
Other Alternatives
If the benchmark were to compare alternative multiplication methods, other options could include:
Math.pow()
function: let x = Math.pow(99, 2);
Math.sqrt()
and Math.pow()
together: let sqrtX = Math.sqrt(99); let x = Math.pow(sqrtX, 2);
However, these alternatives are not explicitly mentioned in the benchmark definition.