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JS BigInt big number performance v3
(version: 0)
Compare Number vs BigInt for big numbers
Comparing performance of:
BigInt vs Number
Created:
2 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var bigInt1 = 1000000n var bigInt2 = 50n var number1 = 1000000 var number2 = 50
Tests:
BigInt
a = bigInt1 b = bigInt2 c = a - b c = a * b c = a + b
Number
a = number1 b = number2 c = a - b c = a * b c = a + b
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
BigInt
Number
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation of the provided JSON benchmark. **What is being tested?** The benchmark compares the performance of two data types in JavaScript: `Number` and `BigInt`. Specifically, it measures the execution time of basic arithmetic operations (+, -, *, /) on both data types with large numbers (1000000 and 50). **Options compared** Two options are being compared: 1. **Number**: This is the traditional JavaScript number type, which can represent very large numbers using exponential notation (e.g., `10^6`). 2. **BigInt**: Introduced in ECMAScript 2020, BigInt is a new data type specifically designed to represent arbitrarily large integers. **Pros and Cons of each approach** **Number:** Pros: * Wider browser support (most modern browsers support Number without any issues) * Faster parsing and conversion from/to strings Cons: * Limited range for very large numbers (due to floating-point precision issues) * Potential performance issues with large numbers, as they may lead to overflow errors or slow down calculations **BigInt:** Pros: * Provides a dedicated data type for representing arbitrarily large integers * Does not suffer from floating-point precision issues * Better performance for arithmetic operations on large numbers (due to optimized implementation) Cons: * Smaller browser support (older browsers like IE 11 and older may not have good support) * May require explicit declaration in some cases **Library usage** In the provided benchmark, no libraries are used. However, it's worth noting that `BigInt` is implemented as a native data type in modern JavaScript engines, so most of the performance benefits come from the engine itself. **Special JS features or syntax** The benchmark uses the new BigInt syntax (e.g., `n1`, `n2`) introduced in ECMAScript 2020. This syntax allows for more readable and concise code when working with large integers. **Other alternatives** If JavaScript engines were not optimized for BigInt, alternative approaches could include: * Using a third-party library likeBigInt.js or jsbn (which provides a similar API to BigInt) * Implementing custom arithmetic operations using bitwise operators * Using other libraries or frameworks that provide support for arbitrary-precision arithmetic However, these alternatives would likely have their own trade-offs in terms of performance, browser support, and code complexity.
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