🔢 gamma function (Γ) from mathematics in Swift 🔢
You just need to add this package as a dependency in your Package.swift:
let package = Package(
name: "MyProject",
dependencies: [
.Package(url: "https://github.com/ythecombinator/GammaFn.git", majorVersion: 1),
// ...
]
// ...
)It returns the gamma function over z.
Note: Complex (
ℂ) numbers aren't supported–only Reals (ℝ).
import GammaFn
// Creating a simple `Double` value which we intend to pass to our Γ function–which is a static method from `Double`:
let simpleValue1: Double = 6.0
let resultValue1 = Double.gamma(for value: simpleValue1)
// => 120.0000000000002
// Another valid approach is accessing the property `gammaValue` from any `Double` value:
let simpleValue2: Double = 12.0
let resultValue2 = simpleValue2.gammaValue
// => 39916800.00000004It returns the natural log of the gamma function for z.
Note: This function is used internally by the spouge approximation to compute large values.
import GammaFn
// Creating a simple `Double` value which we intend to pass to our Γ function–which is a static method from `Double`:
let simpleValue3: Double = 9.0
let resultValue3 = Double.gamma(for value: simpleValue3)
// => 10.64917311666183
// Accessing the property `logValueForGamma` from any `Double` value is valid as well:
let simpleValue4: Double = 112.0
let resultValue4 = simpleValue4.logValueForGamma
// => 415.0403783916892GammaFn is distributed under the MIT License, available in this repository.
All contributions are assumed to be also licensed under the same.