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@ -138,12 +138,10 @@ func getExpirationTime(age time.Duration) time.Time {
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return time.Now().Truncate(time.Second).Add(age)
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}
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// abs returns the absolute value of n using the two's complement form.
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//
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// It will overflow with math.MinInt64 in the same way a branching version
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// would, this is not a problem because maxAgeRegex will block negative numbers
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// and the logic will never produce that number.
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// abs returns the absolute value of n.
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func abs(n time.Duration) time.Duration {
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y := n >> 63
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return (n ^ y) - y
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if n < 0 {
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return -n
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}
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return n
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}
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