math

Documentation

Index

• Constants
• func Add64(a, b uint64) (uint64, error)
• func Diff64(a, b uint64) uint64
• func Max64(max uint64, nums ...uint64) uint64
• func Min64(min uint64, nums ...uint64) uint64
• func Mul64(a, b uint64) (uint64, error)
• func Sub64(a, b uint64) (uint64, error)
• type Averager
  • func NewAverager(initialPrediction float64, halflife time.Duration, currentTime time.Time) Averager
  • func NewSyncAverager(averager Averager) Averager

Constants

const MaxInt = int(^uint(0) >> 1)

MaxInt is defined rather than using math.MaxInt to support go versions < 1.17.

Functions

func Add64

func Add64(a, b uint64) (uint64, error)

Add64 returns: 1) a + b 2) If there is overflow, an error

func Diff64

func Diff64(a, b uint64) uint64

func Max64

func Max64(max uint64, nums ...uint64) uint64

Max64 returns the maximum of the values provided

func Min64

func Min64(min uint64, nums ...uint64) uint64

Min64 returns the minimum of the values provided

func Mul64

func Mul64(a, b uint64) (uint64, error)

Mul64 returns: 1) a * b 2) If there is overflow, an error

func Sub64

func Sub64(a, b uint64) (uint64, error)

Sub64 returns: 1) a - b 2) If there is underflow, an error

Types

type Averager

type Averager interface {
	// Observe the value at the given time
	Observe(value float64, currentTime time.Time)

	// Read returns the average of the provided values.
	Read() float64
}

Averager tracks a continuous time exponential moving average of the provided values.

func NewAverager

func NewAverager(
	initialPrediction float64,
	halflife time.Duration,
	currentTime time.Time,
) Averager

func NewSyncAverager

func NewSyncAverager(averager Averager) Averager