wehub-resource-sync
680845cb1c
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50 lines
1.7 KiB
Swift
50 lines
1.7 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025-2026 Apple Inc. and the Containerization project authors.
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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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// https://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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extension BinaryInteger {
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private func toUnsignedMemoryAmount(_ amount: UInt64) -> UInt64 {
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guard self >= 0 else {
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fatalError("encountered negative number during conversion to memory amount")
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}
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let val = UInt64(self)
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let (newVal, overflow) = val.multipliedReportingOverflow(by: amount)
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guard !overflow else {
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fatalError("UInt64 overflow when converting to memory amount")
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}
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return newVal
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}
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public func kib() -> UInt64 {
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self.toUnsignedMemoryAmount(1 << 10)
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}
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public func mib() -> UInt64 {
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self.toUnsignedMemoryAmount(1 << 20)
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}
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public func gib() -> UInt64 {
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self.toUnsignedMemoryAmount(1 << 30)
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}
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public func tib() -> UInt64 {
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self.toUnsignedMemoryAmount(1 << 40)
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}
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public func pib() -> UInt64 {
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self.toUnsignedMemoryAmount(1 << 50)
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}
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}
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