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toFixed vs round with epsilon
(version: 0)
Comparing performance of:
toFixed vs round
Created:
3 years ago
by:
Guest
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Tests:
toFixed
0.12343234544.toFixed(4)
round
Math.round((0.12343234544 + Number.EPSILON) * Math.pow(10, 4)) / Math.pow(10, 4)
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Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
toFixed
round
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares two approaches for rounding numbers: `toFixed` and `Math.round`. The goal is to determine which method is faster, more efficient, or both. **Options Compared** There are two options being compared: 1. **toFixed**: This method uses the `toFixed()` function to round a number to a specified precision. 2. **round**: This method uses the `Math.round()` function to round a number to the nearest integer, with an additional trick using `Number.EPSILON` and exponentiation. **Pros and Cons of Each Approach** 1. **toFixed**: * Pros: Easy to use, straightforward syntax. * Cons: May not be as efficient for large numbers or high precisions, as it requires a fixed number of decimal places. 2. **round**: * Pros: More flexible, can handle larger ranges and higher precisions without additional calculations. * Cons: More complex syntax, may require understanding of `Number.EPSILON` and exponentiation. **Library Used** In this benchmark, the `toFixed()` function is part of the JavaScript standard library. The same goes for the `Math.round()` function. **Special JS Feature/Syntax** The `round` test case uses a trick with `Number.EPSILON`, which is a small positive number added to floating-point values to help mitigate rounding errors. This technique is widely used in numerical computations to ensure accurate results. However, it's not a special feature or syntax per se but rather an optimization technique. **Other Alternatives** If you needed to round numbers differently, other approaches could include: * Using the `Math.round()` function with a custom precision argument (not available in older JavaScript versions). * Implementing your own rounding algorithm using bitwise operations or other mathematical techniques. * Using libraries like `decimal.js` for precise decimal arithmetic. In summary, this benchmark is designed to compare the efficiency of two common ways to round numbers in JavaScript: `toFixed` and `Math.round`. The results can help developers choose the best approach for their specific use cases.
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toFixed vs toPrecision vs Math.round() 22222
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