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Math.pow() vs ** operator
(version: 0)
Comparing performance of:
Math.pow() - Integer ^ Integer vs Math.pow() - Real ^ Integer vs Math.pow() - Real ^ Real vs ** - Integer ^ Integer vs ** - Real ^ Integer vs ** - Real ^ Real
Created:
4 years ago
by:
Registered User
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Tests:
Math.pow() - Integer ^ Integer
Math.pow(2, 999)
Math.pow() - Real ^ Integer
Math.pow(1.9, 999)
Math.pow() - Real ^ Real
Math.pow(1.9, 999.1)
** - Integer ^ Integer
2 ** 999
** - Real ^ Integer
1.9 ** 999
** - Real ^ Real
1.9 ** 999.1
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
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Test case name
Result
Math.pow() - Integer ^ Integer
Math.pow() - Real ^ Integer
Math.pow() - Real ^ Real
** - Integer ^ Integer
** - Real ^ Integer
** - Real ^ Real
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 the benchmark. **What is being tested?** The provided JSON represents two different approaches to raising numbers to powers: 1. **`Math.pow()` function**: This is a built-in JavaScript function that calculates the power of a number. For example, `Math.pow(2, 3)` returns `8`. 2. **`** operator (exponentiation)**: This is a unary operator in JavaScript that raises a number to a power. For example, `2 ** 3` returns `8`. The benchmark tests the performance of these two approaches with different inputs: * Integer exponents (`Math.pow()` and `**` with integer values) * Real exponents (`Math.pow()` and `**` with real numbers) * Mixed types (e.g., a real number raised to an integer power, or vice versa) **Options compared** The benchmark compares the performance of: 1. **`Math.pow()`**: A built-in JavaScript function for raising numbers to powers. 2. **`** operator (exponentiation)`: A unary operator in JavaScript that raises a number to a power. **Pros and Cons** * `Math.pow()`: Pros: + Well-established, widely supported, and optimized by browsers. + Can handle arbitrary-precision arithmetic. Cons: + May be slower due to its function call overhead. * `** operator (exponentiation)`: Pros: + Often faster than `Math.pow()` due to the elimination of function call overhead. + More concise and expressive in some cases. However, it's essential to note that the performance difference between these two approaches can be significant, especially for large exponents. The `-math-pow` test case is designed to measure this difference. **Special JS feature or syntax** There isn't any special JavaScript feature or syntax used in this benchmark other than the `** operator (exponentiation)` which is a standard unary operator. **Library usage** None of the tests use any external libraries. **Other alternatives** While not explicitly tested, alternative approaches to raising numbers to powers could include: 1. **`** operator with a multiplier**: Using multiple `*` operators to achieve exponentiation, e.g., `(2 * 2 * ... * 2)`. 2. **Custom implementation using loops or bitwise operations**: Implementing exponentiation manually using loops or bitwise operations, such as shifting and adding. However, these alternatives are not tested in this benchmark, and the performance of `Math.pow()` is compared to a native, built-in approach. Overall, this benchmark provides valuable insights into the performance characteristics of two commonly used approaches to raising numbers to powers in JavaScript.
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