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JS BigInt big number performance v2 BIS 2
(version: 0)
Compare Number vs BigInt for big numbers subtraction and lt comparison
Comparing performance of:
BigInt vs Number vs BigInt cast to Number compare
Created:
3 years ago
by:
Guest
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Script Preparation code:
var bigInt1 = 10000000000000000000000000000n var bigInt2 = 10000000000000000000000000005n var number1 = 1000000 var number2 = 1000005
Tests:
BigInt
a = bigInt1 b = bigInt2 c = a - b d = a < b
Number
a = number1 b = number2 c = a - b d = a < b
BigInt cast to Number compare
a = bigInt1 b = bigInt2 c = a - b cn = Number(c) d = cn < 10
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
BigInt
Number
BigInt cast to Number compare
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares the performance of using `Number` and `BigInt` for handling large numbers in JavaScript. Let's break it down: **What's Being Tested:** * **Subtraction (`-`)**: The code performs subtraction operations on both `Number` and `BigInt` values. * **Comparison (`<`)**: It compares the results of the subtraction to check if the difference is less than a certain value. **Options Compared:** 1. **`Number`:** JavaScript's built-in data type for representing numbers with standard precision (up to around 2^53). For very large numbers, `Number` can lead to rounding errors or overflow issues. 2. **`BigInt`:** Introduced in modern JavaScript, `BigInt` allows you to work with arbitrary-precision integers without the limitations of `Number`. It's designed for extremely large numbers where precision is critical. 3. **Casting `BigInt` to `Number` (`Number(c)`)**: This test checks if converting a `BigInt` result back to a `Number` for comparison introduces any performance overhead or accuracy issues. **Pros and Cons:** * **`Number`**: * **Pro:** Simpler, widely used, good for most typical numerical operations. * **Con:** Limited precision; can overflow or introduce rounding errors with very large numbers. * **`BigInt`**: * **Pro:** Arbitrary-precision integers; avoids overflow and rounding issues for massive calculations. * **Con:** Can be slightly slower than `Number` for common operations due to the increased complexity of handling arbitrary precision. **Other Considerations:** * **Use Case**: If your application deals with extremely large numbers (billions, trillions, or beyond), `BigInt` is essential to ensure accurate results. * **Performance Trade-off**: For most everyday calculations, the performance difference between `Number` and `BigInt` might be negligible. **Alternatives:** If you need even more advanced numerical capabilities than `BigInt`, there are libraries like `Decimal.js` that provide decimal arithmetic with precise control over rounding and scale.
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