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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Collections open source project
//
// Copyright (c) 2022 - 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
// #############################################################################
// # #
// # DO NOT EDIT THIS FILE; IT IS AUTOGENERATED. #
// # #
// #############################################################################
// In single module mode, we need these declarations to be internal,
// but in regular builds we want them to be public. Unfortunately
// the current best way to do this is to duplicate all definitions.
#if COLLECTIONS_SINGLE_MODULE
extension FixedWidthInteger {
/// Round up `self` to the nearest power of two, assuming it's representable.
/// Returns 0 if `self` isn't positive.
@inlinable
internal func _roundUpToPowerOfTwo() -> Self {
guard self > 0 else { return 0 }
let l = Self.bitWidth - (self &- 1).leadingZeroBitCount
return 1 << l
}
}
#else // !COLLECTIONS_SINGLE_MODULE
extension FixedWidthInteger {
/// Round up `self` to the nearest power of two, assuming it's representable.
/// Returns 0 if `self` isn't positive.
@inlinable
public func _roundUpToPowerOfTwo() -> Self {
guard self > 0 else { return 0 }
let l = Self.bitWidth - (self &- 1).leadingZeroBitCount
return 1 << l
}
}
#endif // COLLECTIONS_SINGLE_MODULE
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