math

Documentation

Index

• Variables
• func AbsInt64(x int64) uint64
• func Add[N Addable](a N, nums ...N) N
• func BinaryCount[N constraints.Unsigned](n N) int
• func Combination(a, s uint64) uint64
• func Factorial(a uint64) uint64
• func GCD(m, n uint64) uint64
• func LCM(m, n uint64) uint64
• func Less[N constraints.Ordered](a, b N) bool
• func MatchWildcard(pattern, str string) bool
• func MatchWildcardByte(pattern, str []byte) bool
• func Max[N cmp.Ordered](a, b N) N
• func Maximum[N constraints.Ordered](a N, nums ...N) N
• func Min[N cmp.Ordered](a, b N) N
• func Minimum[N cmp.Ordered](a N, nums ...N) N
• func Multiply[N Multiplicative](a N, nums ...N) N
• func Permutation(a, s uint64) uint64
• func RandBool(odds float64) bool
• func RandDistribute[T constraints.Integer](total T, count int, deviation T) []T
• func RandF[T constraints.Float](min, max T) T
• func RandI[T constraints.Integer](min, max T) T
• func RandInt(min int, max int) int
• func RandTrue(odds int, base int) bool
• func RuneMaxMatch(src, ma []rune) int
• func RuneSimilarity(src, ma []rune) float32
• func StringSimilarityRune(s, p string) float32
• type Addable
• type Fractional
  • func Float2Fractional(f float64) (Fractional, error)
  • func MakeFractional(numerator int64, denominator uint64) Fractional
  • func Str2Fractional(s string) (Fractional, error)
  • func (myt Fractional) Add(r Fractional) Fractional
  • func (myt Fractional) Div(r Fractional) Fractional
  • func (myt *Fractional) Lose()
  • func (myt Fractional) Mul(r Fractional) Fractional
  • func (myt Fractional) Repeating() string
  • func (myt Fractional) String() string
  • func (myt Fractional) Sub(r Fractional) Fractional
  • func (myt Fractional) Value() float64
• type Multiplicative

Variables

var IInfFractional = Fractional{-1, 0}

var UInfFractional = Fractional{1, 0}

var ZeroFractional = Fractional{0, 1}

Functions

func AbsInt64

func AbsInt64(x int64) uint64

绝对值

func Add

func Add[N Addable](a N, nums ...N) N

func BinaryCount

func BinaryCount[N constraints.Unsigned](n N) int

计算二进制中1的个数

func Combination

func Combination(a, s uint64) uint64

组合

func Factorial

func Factorial(a uint64) uint64

阶乘

func GCD

func GCD(m, n uint64) uint64

最大公因数:两个数能够整除该数

func LCM

func LCM(m, n uint64) uint64

最小公倍数：两个数能被该数整除

func Less

func Less[N constraints.Ordered](a, b N) bool

func MatchWildcard

func MatchWildcard(pattern, str string) bool

*

• MatchWildcard: - parse if a string matches given wildcard pattern
• @pattern: wildcard pattern
• @str: the string to be parsed *
• Description: Parse the string @str to check if matches wildcard
• pattern @pattern. The pattern may contain two type wildcardes:
• '*' - matches zero or more characters
• '?' - matches one character
• If it's matched, return true, else return false.

func MatchWildcardByte

func MatchWildcardByte(pattern, str []byte) bool

func Max

func Max[N cmp.Ordered](a, b N) N

func Maximum

func Maximum[N constraints.Ordered](a N, nums ...N) N

func Min

func Min[N cmp.Ordered](a, b N) N

func Minimum

func Minimum[N cmp.Ordered](a N, nums ...N) N

func Multiply

func Multiply[N Multiplicative](a N, nums ...N) N

can * *=

func Permutation

func Permutation(a, s uint64) uint64

排列

func RandBool

func RandBool(odds float64) bool

概率随机[0,1)

func RandDistribute

func RandDistribute[T constraints.Integer](total T, count int, deviation T) []T

func RandF

func RandF[T constraints.Float](min, max T) T

[min, max)

func RandI

func RandI[T constraints.Integer](min, max T) T

[min,max]

func RandInt

func RandInt(min int, max int) int

[min,max]

func RandTrue

func RandTrue(odds int, base int) bool

概率随机

func RuneMaxMatch

func RuneMaxMatch(src, ma []rune) int

func RuneSimilarity

func RuneSimilarity(src, ma []rune) float32

func StringSimilarityRune

func StringSimilarityRune(s, p string) float32

Types

type Addable

type Addable interface {
	cmp.Ordered | constraints.Complex
}

can + +=

type Fractional

type Fractional struct {
	Numerator   int64
	Denominator uint64
}

func Float2Fractional

func Float2Fractional(f float64) (Fractional, error)

func MakeFractional

func MakeFractional(numerator int64, denominator uint64) Fractional

func Str2Fractional

func Str2Fractional(s string) (Fractional, error)

func (Fractional) Add

func (myt Fractional) Add(r Fractional) Fractional

func (Fractional) Div

func (myt Fractional) Div(r Fractional) Fractional

func (*Fractional) Lose

func (myt *Fractional) Lose()

func (Fractional) Mul

func (myt Fractional) Mul(r Fractional) Fractional

func (Fractional) Repeating

func (myt Fractional) Repeating() string

只显示循环位数

func (Fractional) String

func (myt Fractional) String() string

func (Fractional) Sub

func (myt Fractional) Sub(r Fractional) Fractional

func (Fractional) Value

func (myt Fractional) Value() float64

type Multiplicative

type Multiplicative interface {
	constraints.Integer | constraints.Float | constraints.Complex
}