Benchmark: testtt - MeasureThat.net

Tests:

1
var a = 6185; var b = a-Math.floor(a/11)*11; return b;
2
var a = 6185; var b = a%11%10; return b;
3
var a = 6185; var b = a-(a/11>>0)*11; return b;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2
3

Fastest: N/A

Slowest: N/A

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

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I'll break down the provided benchmark definitions and explain what's being tested, compared options, pros and cons, and other considerations.

**Benchmark Definitions**

The benchmark definitions are JavaScript expressions that perform arithmetic operations on a constant value `a = 6185`. The three benchmarks calculate different values using various arithmetic operators:

1. **Benchmark 1**: `var b = a - Math.floor(a/11)*11;`
	* Uses the modulo operator (`%`) is not present, but the expression uses integer division and multiplication with an integer result.
2. **Benchmark 2**: `var b = a % 11 % 10;`
	* Uses the modulo operator (`%`) twice in sequence to calculate a value between 0 and 9.
3. **Benchmark 3**: `var b = a - (a/11>>0)*11;`
	* Uses the unsigned right shift operator (`>>`) to truncate the result of the division, then multiplies with an integer.

**Comparison**

The three benchmarks are compared in terms of execution speed on various devices and browsers. The benchmark with the highest executions per second is considered faster.

**Options Compared**

The options being compared are:

* **Modulo operator (`%`)**: used in Benchmark 1, Benchmark 2
	+ Pros:
		- Simple and straightforward to implement.
		- Fast for integer arithmetic.
	+ Cons:
		- May not be as efficient as other methods for certain use cases.
* **Integer division**: used in all three benchmarks
	+ Pros:
		- Efficient for integer arithmetic.
	+ Cons:
		- Can result in fractional results if the dividend is large.
* **Unsigned right shift operator (`>>`)**: used only in Benchmark 3
	+ Pros:
		- Truncates the result of division, reducing precision loss.
	+ Cons:
		- May not be as straightforward to implement as other methods.

**Library**

None of the benchmarks use external libraries. However, it's worth noting that `Math.floor()` is a built-in JavaScript function.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in these benchmarks.

**Other Considerations**

* **Arithmetic Operator Priorities**: The order of operations matters when using multiple operators with the same precedence. In Benchmark 1 and 3, the expression `a - (a/11>>0)*11` uses integer division followed by multiplication and subtraction, while in Benchmark 2, the modulo operator is used twice to calculate a value between 0 and 9.
* **Integer Overflow**: If the input value `a` were larger than 31-bit signed integers can represent, the calculations might overflow or exhibit unexpected behavior.

**Alternatives**

Other alternatives for similar arithmetic operations could include:

* Using decimal arithmetic libraries like `decimal.js` or implementing decimal arithmetic manually using arbitrary-precision arithmetic.
* Using bitwise operators to achieve integer division and multiplication without using explicit division or modulo operations.
* Optimizing the code for specific use cases, such as calculating large numbers quickly.

Keep in mind that the best approach depends on the specific requirements of your application and the trade-offs you're willing to make between performance, readability, and maintainability.

Related benchmarks:

testtt (version: 0)

test

Comparing performance of: 1 vs 2 vs 3

Created: 8 years ago by: Guest

Jump to the latest result

1

2

3

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):