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@@ -30,8 +30,10 @@ const MIN_IN_HOUR: u64 = 60;
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const SECS_IN_HOUR: u64 = 3600;
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const SECS_IN_HOUR: u64 = 3600;
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/// Helper structure providing time related calculations.
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/// Helper structure providing time related calculations.
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-/// This struct is optimized for performance and does not check
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-/// its arithmetic: division-by-zero is possible for certain values.
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+/// This struct is optimized for performance. The developer is responsible
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+/// for ensuring `slot_time` and `epoch_length` are greater than 0.
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+/// Values of 0 for these fields are incoherent and unsafe in asynchronous
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+/// context.
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/// [`TimeKeeperSafe`] should be used if safety is more important than
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/// [`TimeKeeperSafe`] should be used if safety is more important than
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/// performance.
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/// performance.
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#[derive(Clone)]
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#[derive(Clone)]
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