github.com/metacubex/mihomo@v1.18.5/transport/tuic/congestion/minmax.go (about)

     1  package congestion
     2  
     3  import (
     4  	"math"
     5  	"time"
     6  )
     7  
     8  // InfDuration is a duration of infinite length
     9  const InfDuration = time.Duration(math.MaxInt64)
    10  
    11  // MinNonZeroDuration return the minimum duration that's not zero.
    12  func MinNonZeroDuration(a, b time.Duration) time.Duration {
    13  	if a == 0 {
    14  		return b
    15  	}
    16  	if b == 0 {
    17  		return a
    18  	}
    19  	return Min(a, b)
    20  }
    21  
    22  // AbsDuration returns the absolute value of a time duration
    23  func AbsDuration(d time.Duration) time.Duration {
    24  	if d >= 0 {
    25  		return d
    26  	}
    27  	return -d
    28  }
    29  
    30  // MinTime returns the earlier time
    31  func MinTime(a, b time.Time) time.Time {
    32  	if a.After(b) {
    33  		return b
    34  	}
    35  	return a
    36  }
    37  
    38  // MinNonZeroTime returns the earlist time that is not time.Time{}
    39  // If both a and b are time.Time{}, it returns time.Time{}
    40  func MinNonZeroTime(a, b time.Time) time.Time {
    41  	if a.IsZero() {
    42  		return b
    43  	}
    44  	if b.IsZero() {
    45  		return a
    46  	}
    47  	return MinTime(a, b)
    48  }
    49  
    50  // MaxTime returns the later time
    51  func MaxTime(a, b time.Time) time.Time {
    52  	if a.After(b) {
    53  		return a
    54  	}
    55  	return b
    56  }