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trunc vs floor
(version: 0)
Comparing performance of:
trunc vs floor
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var num = 99999;
Tests:
trunc
Math.trunc(num);
floor
Math.floor(num);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
trunc
floor
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark test case that compares two methods for truncating decimal numbers: `Math.trunc()` and `Math.floor()`. The benchmark aims to measure the performance difference between these two approaches. **What are being compared?** The main options being compared in this benchmark are: 1. **`Math.trunc()`**: This method returns the largest integer less than or equal to the given number. 2. **`Math.floor()`**: This method returns the largest integer less than or equal to the given number, but it rounds down towards negative infinity if the fractional part is zero. **Pros and Cons of each approach** * `Math.trunc()`: + Pros: It might be faster for small integers because it doesn't need to calculate the fractional part. + Cons: For larger integers, it may be slower due to the overhead of calculating the fractional part and rounding down. * `Math.floor()`: + Pros: It provides a more accurate result for decimal numbers with a fractional part greater than zero. + Cons: As mentioned earlier, it might be slower than `Math.trunc()` for small integers. **Library used** In this benchmark, no specific JavaScript library is mentioned. However, if the test case uses libraries like `lodash` or `mathjs`, they might provide optimized implementations of these mathematical functions. **Special JS features/syntax** This benchmark does not use any special JavaScript features or syntax. **Other alternatives** There are other ways to truncate decimal numbers in JavaScript, such as: * Using a library like `decimal.js` that provides precise arithmetic operations. * Implementing the truncation function manually using bitwise operators (e.g., `num >> 0` for integers). * Using a more modern approach with `BigInt` and its built-in `trunc()` method. **Benchmark preparation code** The provided Script Preparation Code (`"var num = 99999;"`) initializes a variable `num` to 99999, which is used in the benchmark test cases. This code is executed before running each test case. **Individual test cases** The two individual test cases compare the performance of `Math.trunc()` and `Math.floor()` for the same input value (`num = 99999`). The test cases measure the number of executions per second for each function.
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