Benchmark: Verifica si es par

Tests:

Resta
const esPar = (x, b = true) => x == 0 ? b : esPar(x - 1, !b); esPar(10);
Division
const esPar = (x) => x % 2 == 0; esPar(10);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Resta
Division

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/113.0.0.0 Safari/537.36

Browser/OS: Chrome 113 on Windows

View result in a separate tab

Test name	Executions per second
Resta	6277928.5 Ops/sec
Division	696634304.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark consists of two individual test cases: "Resta" (which translates to "Subtract" in English) and "Division". Both tests are designed to measure the performance of JavaScript code on MeasureThat.net.

**Test Case 1: Resta**

* Benchmark Definition:
```javascript
const esPar = (x, b = true) => x == 0 ? b : esPar(x - 1, !b);
esPar(10);
```
This test case uses a recursive function `esPar` to calculate the parity of a number. The function takes two arguments: `x` and an optional `b` parameter with a default value of `true`. If `x` is 0, the function returns the value of `b`. Otherwise, it calls itself recursively with `x - 1` and the negation of `b`.

**Pros and Cons:**

* Pros:
	+ This implementation uses a recursive approach, which can be easier to understand for some developers.
	+ It avoids explicit loops, which can make the code more concise.
* Cons:
	+ Recursive functions can lead to stack overflows for large inputs, as each recursive call creates a new stack frame.
	+ The function's performance may suffer due to the overhead of repeated function calls.

**Test Case 2: Division**

* Benchmark Definition:
```javascript
const esPar = (x) => x % 2 == 0;
esPar(10);
```
This test case uses a simple function `esPar` that takes a single argument `x` and returns whether it's even (`x % 2 == 0`). The function is called with the input value `10`.

**Pros and Cons:**

* Pros:
	+ This implementation is much simpler and more efficient than the recursive approach in Test Case 1.
	+ It uses a built-in operator (`%`) to calculate the remainder, which is typically faster than explicit division.
* Cons:
	+ The function's performance may be affected by the presence of floating-point arithmetic if `x` is not an integer.

**Libraries and Special Features:**

There are no libraries used in these benchmark definitions. However, the use of a custom recursive function (`esPar`) might indicate that the developer has a specific requirement or constraint for this particular problem.

**Other Considerations:**

When comparing these two test cases, it's essential to consider the trade-off between readability and performance. The recursive approach in Test Case 1 may be more intuitive for some developers, but its potential performance drawbacks should not be overlooked. In contrast, the simple implementation in Test Case 2 prioritizes efficiency over readability.

**Alternatives:**

If you were to rewrite these benchmark definitions using alternative approaches, here are a few options:

* For Test Case 1 (Resta), consider using an iterative approach instead of recursion, which can avoid stack overflow issues:
```javascript
function esPar(x) {
    while (x > 0) {
        x = x & (x - 1);
    }
    return true; // or false depending on the desired behavior
}
```
* For Test Case 2 (Division), consider using a more robust method to calculate even numbers, such as using bit manipulation:
```javascript
function esPar(x) {
    return (x ^ x >> 1) === 0;
}
```

Keep in mind that these alternative implementations may have different trade-offs and performance characteristics compared to the original benchmark definitions.

Related benchmarks:

Verifica si es par (version: 0)

EsPar

Comparing performance of: Resta vs Division

Created: one year ago by: Guest

Jump to the latest result

Resta

Division

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):