PONS, Protocol-Oriented Number System in Pure Swift.
It has all functionality of swift-prime plus BigInt support.
Prime number extension in Pure Swift
import Prime // not needed if you are using prime.swift directly
2.isPrime // true
42.isPrime // false
0x7FFFffff.isPrime // true (M31)
0.nextPrime // 2
Int.max.prevPrime // 9223372036854775783 on OS X
Int.Prime.within(0..<100) // [2, 3, 5, 7, ... 97]
Int.Prime.within(Int.max-100..<Int.max) // [9223372036854775783]
Int.max.primeFactors // [7, 7, 73, 127, 337, 92737, 649657]Swift 2.x, both Xcode 7 and Linux.
- It emits warings on Swift 2.2 but works okay.
Just add prime.swift to it.
Browse all the playgrounds and the project via Prime.xcworkspace.
Just open the playground file of your OS of choice and enjoy. OSX most detaild. iOS and tvOS just for testing purpurse.
just make repl.
1> 42.isPrime
repl.swift:1:1: error: value of type 'Int' has no member 'isPrime'
42.isPrime
^~ ~~~~~~~
1> import Prime
2> 42.isPrime
$R0: Bool = false
3>git clone https://github.com/dankogai/swift-prime.git
cd swift-prime
make replgit clone https://github.com/dankogai/swift-prime.git
cd swift-prime
make SWIFTPATH=${YOUR_SWIFT_PATH} repl # ${YOUR_SWIFT_PATH}=~/swift/usr/bin in my caseIt used to depend on 128-bit arithmetics bridged to C but it is written to be C-Free. In exchange it is a little slower.