72 lines
1.2 KiB
Go
72 lines
1.2 KiB
Go
package congestion
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import (
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"math"
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"time"
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"golang.org/x/exp/constraints"
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)
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// InfDuration is a duration of infinite length
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const InfDuration = time.Duration(math.MaxInt64)
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func Max[T constraints.Ordered](a, b T) T {
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if a < b {
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return b
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}
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return a
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}
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func Min[T constraints.Ordered](a, b T) T {
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if a < b {
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return a
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}
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return b
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}
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// MinNonZeroDuration return the minimum duration that's not zero.
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func MinNonZeroDuration(a, b time.Duration) time.Duration {
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if a == 0 {
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return b
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}
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if b == 0 {
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return a
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}
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return Min(a, b)
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}
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// AbsDuration returns the absolute value of a time duration
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func AbsDuration(d time.Duration) time.Duration {
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if d >= 0 {
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return d
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}
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return -d
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}
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// MinTime returns the earlier time
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func MinTime(a, b time.Time) time.Time {
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if a.After(b) {
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return b
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}
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return a
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}
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// MinNonZeroTime returns the earlist time that is not time.Time{}
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// If both a and b are time.Time{}, it returns time.Time{}
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func MinNonZeroTime(a, b time.Time) time.Time {
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if a.IsZero() {
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return b
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}
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if b.IsZero() {
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return a
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}
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return MinTime(a, b)
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}
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// MaxTime returns the later time
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func MaxTime(a, b time.Time) time.Time {
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if a.After(b) {
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return a
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}
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return b
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}
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