32 lines
722 B
Swift
32 lines
722 B
Swift
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import Foundation
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extension Int {
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/// Moves the current int into the nearest power of two
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///
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/// This is used since the UnsafeMutableRawPointer will face issues when writing/reading
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/// if the buffer alignment exceeds that actual size of the buffer
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var convertToPowerofTwo: Int {
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guard self > 0 else { return 1 }
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var n = UOffset(self)
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#if arch(arm) || arch(i386)
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let max = UInt32(Int.max)
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#else
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let max = UInt32.max
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#endif
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n -= 1
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n |= n >> 1
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n |= n >> 2
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n |= n >> 4
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n |= n >> 8
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n |= n >> 16
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if n != max {
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n += 1
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}
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return Int(n)
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}
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}
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