nim-codex/codex/periods.nim

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import pkg/stint
type
Periodicity* = object
seconds*: UInt256
Period* = UInt256
Timestamp* = UInt256
func periodOf*(periodicity: Periodicity, timestamp: Timestamp): Period =
timestamp div periodicity.seconds
func periodStart*(periodicity: Periodicity, period: Period): Timestamp =
period * periodicity.seconds
func periodEnd*(periodicity: Periodicity, period: Period): Timestamp =
periodicity.periodStart(period + 1)