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🔄 Safe and efficient bitwise rotation in Swift
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tgymnich/BitwiseRotate
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A swift package providing bitwise rotation operators forFixedWidthInteger andSIMD vectors with aFixedWidthInteger scalar.This package is written in a sepcific way tocompile toror androl on x86. On ARM onlyUInt32,UInt64,Int32 andInt64compile toror. Rotations onSIMD vectors don't yet compile to the most efficient instructions possible.
In your Package.swift add:
.package(url:"https://github.com/tgymnich/BitwiseRotate.git", from:"1.1.1")
letsomeBits:UInt8=0b01010100<<<3 // returns 0b10100010
letsomeBits:UInt8=0b01010100>>>3 // returns 0b10001010
letsomeBitVector=SIMD3<UInt8>(arrayLiteral:0b01010100,0b11011100,0b00011000)<<<1 // (0b10101000, 0b10111001, 0b00110000)
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🔄 Safe and efficient bitwise rotation in Swift