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Decimal.js vs native subtract vs native localeCompare
(version: 0)
- https://github.com/MikeMcl/decimal.js/tree/v10.2.0
Comparing performance of:
Native vs Native + localeCompare vs decimal.js
Created:
3 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdnjs.cloudflare.com/ajax/libs/decimal.js/10.2.1/decimal.min.js"></script>
Tests:
Native
var a = 0.000818418824480307; var b = 0.0104008226549157; var c = a - b;
Native + localeCompare
var a = 0.000818418824480307; var b = 0.0104008226549157; var c = a.toString().localeCompare(b.toString(), "en", {numeric: true});
decimal.js
var a = new Decimal(0.000818418824480307); var b = new Decimal(0.0104008226549157); var c = a.comparedTo(b);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Native
Native + localeCompare
decimal.js
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into explaining the provided benchmark. **Overview** The benchmark measures three different approaches to subtracting two decimal numbers: native subtraction, using the `localeCompare` method with `toString`, and using the Decimal.js library. The goal is to determine which approach is the most efficient. **Options Compared** 1. **Native Subtraction**: This approach uses the built-in subtraction operator (`-`) to perform the calculation. 2. **Native + localeCompare**: This approach converts both numbers to strings using `toString` and then uses the `localeCompare` method to subtract them. The `{numeric: true}` option ensures that the comparison is done numerically, ignoring any cultural or linguistic differences in number representation. 3. **Decimal.js**: This approach uses the Decimal.js library to perform decimal arithmetic. **Pros and Cons of Each Approach** 1. **Native Subtraction**: * Pros: Lightweight, fast execution, no additional dependencies required. * Cons: May not work correctly with very large or very small numbers due to floating-point precision issues. 2. **Native + localeCompare**: * Pros: Works correctly with all types of decimal numbers (positive, negative, zero), handles cultural differences in number representation. * Cons: Slower execution compared to native subtraction and Decimal.js, requires additional string conversions. 3. **Decimal.js**: * Pros: Provides accurate and precise decimal arithmetic, supports a wide range of decimal operations (addition, subtraction, multiplication, division). * Cons: Requires an additional dependency (the library), may be overkill for simple calculations. **Special Consideration: localeCompare** The `localeCompare` method is used in the Native + localeCompare approach to compare two strings. This method takes into account cultural differences in number representation and can return different results depending on the locale. However, this approach has a significant overhead due to the string conversions required. **Benchmark Preparation Code and JSON Interpretation** The provided benchmark preparation code defines three test cases: * The first test case uses native subtraction (`a - b`). * The second test case uses the `localeCompare` method with `toString` (`c = a.toString().localeCompare(b.toString(), "en", { numeric: true })`). * The third test case uses Decimal.js library (`var c = a.comparedTo(b)`). The JSON benchmark definition provides metadata about the benchmark, such as its name and description. **Alternatives** Other alternatives for performing decimal arithmetic in JavaScript include: * Big.js: A lightweight library for big integer arithmetic. * NumJS: A fast and accurate library for numerical computations. * Decimal.js alternatives like Decimal.min.js or Decimal.js Lite, which offer more optimized solutions than the full Decimal.js library.
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