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Add type aliases of `TimeSpecification`.

This commit is contained in:
YOCKOW 2020-05-28 14:40:05 +09:00
parent 1fde22be16
commit 6d9ab30d31
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1 changed files with 22 additions and 0 deletions
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22
Sources/TimeSpecification/TimeSpecification.swift
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@ -112,6 +112,11 @@ extension TimeSpecification: ExpressibleByFloatLiteral {
let double_seconds = floor(value)
self.init(seconds: Int64(double_seconds), nanoseconds: Int32((value - double_seconds) * 1.0E+9))
}
/// Creates an instance initialized to the specified floating-point value.
public init<F>(_ value: F) where F: BinaryFloatingPoint {
self.init(floatLiteral: FloatLiteralType(value))
}
}
extension TimeSpecification {
@ -218,6 +223,23 @@ extension TimeSpecification {
}
}
/// Type used to represent a specific point in time relative
/// to the absolute reference date of 1 Jan 2001 00:00:00 GMT.
public typealias NanosecondAbsoluteTime = TimeSpecification
/// Type used to represent elapsed time in naoseconds.
public typealias NanosecondTimeInterval = TimeSpecification
extension TimeSpecification {
/// The number of nanoseconds from 1 January 1970 to the reference date, 1 January 2001.
public static let timeIntervalBetween1970AndReferenceDate = NanosecondTimeInterval(Date.timeIntervalBetween1970AndReferenceDate)
/// The interval between 00:00:00 UTC on 1 January 2001 and the current date and time.
public static var timeIntervalSinceReferenceDate: NanosecondAbsoluteTime {
return TimeSpecification(clock: .calendar) - TimeSpecification.timeIntervalBetween1970AndReferenceDate
}
}
extension TimeSpecification {
/// Measure a processing time of the closure.
///