forked from BigfootDev/flatbuffers
4d6a7aa8b7
Formats the swift project Update Sample files Update docc documentation Updates swift docs in the website Updates code for Wasm
52 lines
1.3 KiB
Swift
52 lines
1.3 KiB
Swift
/*
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* Copyright 2023 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if !os(WASI)
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import Foundation
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#else
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import SwiftOverlayShims
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#endif
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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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