Benchmark: trigata - MeasureThat.net

Script Preparation code:

function rand(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function angle(x, y) {
  let result = Math.atan(y / x);
  if (x < 0) {
    result += Math.PI;
  } else if (y < 0) {
    result += 2 * Math.PI;
  }
  return result;
}

function angle2(x, y) {
    if (x == 0)
      return (y == 0) ? 0 : (y > 0 ? Math.PI/2 : -Math.PI/2)
  
    var atan_xy = Math.atan(y / x)
    if (x > 0)
      return atan_xy
    else // x < 0
      return atan_xy + (y < 0 ? -Math.PI : Math.PI)
}

Tests:

native
var xO = rand(1, 1000); var yO = rand(1, 1000); Math.atan(yO, xO);
alt
var xT = rand(1, 1000); var yT = rand(1, 1000); angle(xT, yT);
alt2
var xD = rand(1, 1000); var yD = rand(1, 1000); angle2(xD, yD);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native
alt
alt2

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation.

**Benchmark Definition JSON**

The provided JSON represents a JavaScript benchmark definition for MeasureThat.net. It defines two libraries: `Math` and an in-house `angle`, `angle2` functions (custom implementation).

Here are the key aspects of the benchmark definition:

* **Script Preparation Code**: This section contains custom JavaScript code that defines two functions: `rand` and `angle`. The `rand` function returns a random integer between 1 and 1000, while the `angle` and `angle2` functions calculate the angle in radians given two input values (`x` and `y`). The `angle2` function is an alternative implementation of the same calculation.
* **Html Preparation Code**: This section is empty, which means no HTML code is provided for preparation.

**Individual Test Cases**

There are three test cases:

1. **native**: This test case uses the built-in `Math.atan` function to calculate the angle in radians using the native JavaScript implementation.
2. **alt**: This test case uses the custom `angle` function defined earlier to calculate the angle in radians.
3. **alt2**: This test case uses the alternative `angle2` function to calculate the angle in radians.

**Options Compared**

The three test cases compare the performance of different approaches:

* Using the native JavaScript implementation (`Math.atan`)
* A custom implementation (`angle`)
* An alternative custom implementation (`angle2`)

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* **Native JavaScript Implementation (Math.atan)**:
	+ Pros: Wide support, well-optimized, and widely tested.
	+ Cons: May not be the fastest due to inherent limitations in the standard library.
* **Custom Implementation (angle)**:
	+ Pros: Can potentially be faster than the native implementation since it's optimized for specific use cases.
	+ Cons: Limited support, may require additional setup, and lacks broad testing.
* **Alternative Custom Implementation (angle2)**:
	+ Pros: Similar to `angle`, but with some additional optimizations or simplifications.
	+ Cons: May not perform better than the original `angle` implementation.

**Other Considerations**

* The benchmark definition uses a simple input range for `rand(1, 1000)` to ensure consistent results. This might lead to limited scalability in real-world scenarios.
* The custom `angle` and `angle2` functions are likely implemented with performance optimization in mind, as indicated by their use of bitwise operations or other low-level techniques.

**Alternatives**

If you're interested in exploring alternative approaches, here are some options:

* **Other JavaScript implementations**: Consider testing the `Math.atan` function on different browsers or JavaScript engines, such as Node.js, to see how they compare.
* **Hand-optimized code**: Write your own optimized implementation of the `angle` and `angle2` functions using assembly language or other low-level techniques for specific use cases.
* **Specialized libraries**: Explore existing libraries like [js-atan](https://github.com/willow/jsatan) that specialize in fast angle calculations.

I hope this explanation helps you understand the benchmark definition, test cases, and comparison of different approaches!

Related benchmarks:

trigata (version: 0)

Comparing performance of: native vs alt vs alt2

Created: 7 years ago by: Guest

Jump to the latest result

native

alt

alt2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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