Benchmark: Compare long way

Tests:

Compare if, x predefined as 0
var a = Math.random()*100; var b = Math.random()*100; var x = 0; if ( b > a ) { var x = 1; }; var y = 0.7 * x;
Compare if else
var a = Math.random()*100; var b = Math.random()*100; if ( b > a ) { var x = 1; } else { var x = 0; }; var y = 0.7 * x;
Compare math abs
var a = Math.random()*100; var b = Math.random()*100; var x = (Math.abs(a-b)-Math.abs(a-b+1)+1)/2; var y = 0.7 * x;
Compare math abs 0p5
var a = Math.random()*100; var b = Math.random()*100; var x = (Math.abs(a-b)-Math.abs(a-b+1)+1)*0.5; var y = 0.7 * x;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Compare if, x predefined as 0
Compare if else
Compare math abs
Compare math abs 0p5

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is tested, compared, and their pros and cons.

**Benchmark Overview**

The benchmark measures the performance of different approaches for comparing two values in JavaScript. The test cases use various mathematical operations to compare the values, including `if` statements, absolute value (`Math.abs()`), and conditional expressions.

**Test Cases**

1. **Compare if, x predefined as 0**
```javascript
var a = Math.random()*100;
var b = Math.random()*100;
var x = 0;
if (b > a) {
  var x = 1;
};
var y = 0.7 * x;
```
This test case uses an `if` statement to compare two random numbers and assign a value to variable `x`. The performance is measured by executing this code multiple times.

2. **Compare if else**
```javascript
var a = Math.random()*100;
var b = Math.random()*100;
if (b > a) {
  var x = 1;
} else {
  var x = 0;
};
var y = 0.7 * x;
```
This test case is similar to the previous one, but uses an `else` clause instead of an `if` statement.

3. **Compare math abs**
```javascript
var a = Math.random()*100;
var b = Math.random()*100;
var x = (Math.abs(a-b)-Math.abs(a-b+1)+1)/2;
var y = 0.7 * x;
```
This test case uses the `Math.abs()` function to compare two values and calculate the result.

4. **Compare math abs 0p5**
```javascript
var a = Math.random()*100;
var b = Math.random()*100;
var x = (Math.abs(a-b)-Math.abs(a-b+1)+1)*0.5;
var y = 0.7 * x;
```
This test case is similar to the previous one, but multiplies the result by `0.5`.

**Library Used**

None of the test cases use any external libraries.

**Special JavaScript Features or Syntax**

The benchmark uses JavaScript's built-in functions and operators, including:

* `Math.random()`: generates a random number between 0 (inclusive) and 1 (exclusive).
* `Math.abs()`: returns the absolute value of a number.
* Conditional expressions (`?:`): used in the "Compare math abs" test case.

**Approach Comparison**

The benchmark compares the performance of different approaches:

* **If statement**: uses an explicit `if` statement to compare values and assign a result.
* **Else clause**: uses an `else` clause to handle cases where the condition is false.
* **Absolute value function**: uses the `Math.abs()` function to compare values without considering their signs.
* **Conditional expression**: uses a conditional expression (`?:`) to evaluate expressions based on conditions.

**Pros and Cons of Each Approach**

Here are some pros and cons for each approach:

1. **If statement**:
	* Pros: easy to understand, flexible, and can handle complex logic.
	* Cons: may be slower due to the overhead of a conditional statement.
2. **Else clause**:
	* Pros: simpler than an `if` statement and can reduce code duplication.
	* Cons: less flexible than an `if` statement and requires careful handling of cases where conditions are false.
3. **Absolute value function**:
	* Pros: efficient and accurate, as it removes the need to consider signs.
	* Cons: may be slower for very large values due to the extra calculation.
4. **Conditional expression**:
	* Pros: concise and expressive, allowing for a more compact codebase.
	* Cons: may be less intuitive than traditional `if` statements or `else` clauses.

**Other Alternatives**

If you need to compare values in JavaScript, here are some alternative approaches:

1. **Using the ternary operator (`?:`) instead of an `if` statement**: can be a concise way to handle simple conditional logic.
2. **Using the `switch` statement**: can be more efficient than a series of `if` statements for handling multiple cases.
3. **Using bitwise operations**: can be used to compare values without using the `Math.abs()` function or conditional expressions.

Keep in mind that performance differences between these approaches may be negligible, and the choice ultimately depends on the specific use case and personal preference.

Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0

Browser/OS: Firefox 53 on Windows 7

View result in a separate tab

Test name	Executions per second
Compare if, x predefined as 0	41572840.0 Ops/sec
Compare if else	41458088.0 Ops/sec
Compare math abs	43717556.0 Ops/sec
Compare math abs 0p5	43286112.0 Ops/sec

Related benchmarks:

Compare long way (version: 0)

Testing some alternative if comparing

Comparing performance of: Compare if, x predefined as 0 vs Compare if else vs Compare math abs vs Compare math abs 0p5

Created: 7 years ago by: Guest

Jump to the latest result

Compare if, x predefined as 0

Compare if else

Compare math abs

Compare math abs 0p5

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):