mathx

package module
v0.0.0-...-8e30817 Latest Latest
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 Go to latest Published: Jan 4, 2024 License: MIT Imports: 6 Imported by: 0

README

mathx

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TODO

Features

  • Simple API.
  • Dependency-free.
  • Clean and tested code.

Install

Go version 1.17+

go get github.com/cristalhq/mathx

Example

Also see examples: examples_test.go.

Documentation

See these docs.

License

MIT License.

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	DoubleZero   = Double{/* contains filtered or unexported fields */}
	DoubleOne    = Double{/* contains filtered or unexported fields */}
	DoubleInf    = Double{/* contains filtered or unexported fields */}
	DoubleNegInf = Double{/* contains filtered or unexported fields */}
	DoubleNaN    = Double{/* contains filtered or unexported fields */}
	DoublePi     = Double{/* contains filtered or unexported fields */}
	DoubleTau    = Double{/* contains filtered or unexported fields */}
	DoubleE      = Double{/* contains filtered or unexported fields */}
	DoubleLog2   = Double{/* contains filtered or unexported fields */}
	DoublePhi    = Double{/* contains filtered or unexported fields */}
)

Double constants

View Source 
var (
	InfNeg = math.Inf(-1)
	InfPos = math.Inf(+1)
	NaN    = math.NaN()
)

Functions

This section is empty.

Types

type Double 

type Double struct {
	// contains filtered or unexported fields
}

Double float by T.J. Dekker.

See: Dekker, T.J. A floating-point technique for extending the available precision. Numer. Math. 18, 224–242 (1971). https://doi.org/10.1007/BF01397083

func Cosh2 

func Cosh2(x Double) Double

func DoubleFromFloat 

func DoubleFromFloat(x float64) Double

func DoubleFromMul 

func DoubleFromMul(a, b float64) Double

func DoubleFromSqr 

func DoubleFromSqr(x float64) Double

func DoubleFromSum 

func DoubleFromSum(a, b float64) Double

func Exp 

func Exp(x Double) Double

e ** x

func Ln2 

func Ln2(x Double) Double

func Pow22 

func Pow22(base Double, exp Double) Double

func Sinh2 

func Sinh2(x Double) Double

func Sqr2 

func Sqr2(x Double) Double

x ** 2

func Sqrt2 

func Sqrt2(x Double) Double

x ** 0.5

func (Double) Abs 

func (d Double) Abs() Double

func (Double) Add 

func (d Double) Add(x Double) Double

func (Double) Div 

func (d Double) Div(x Double) Double

func (Double) Equal 

func (d Double) Equal(x Double) bool

func (Double) GE 

func (d Double) GE(x Double) bool

func (Double) GT 

func (d Double) GT(x Double) bool

func (Double) Inv 

func (d Double) Inv() Double

func (Double) LE 

func (d Double) LE(x Double) bool

func (Double) LT 

func (d Double) LT(x Double) bool

func (Double) Mul 

func (d Double) Mul(x Double) Double

func (Double) Neg 

func (d Double) Neg() Double

func (Double) Sqr 

func (d Double) Sqr() Double

func (Double) Sub 

func (d Double) Sub(x Double) Double

func (Double) ToFloat64 

func (d Double) ToFloat64() float64

type Histogram 

type Histogram struct {
	// contains filtered or unexported fields
}

Histogram for floats. Based on https://github.com/valyala/histogram with small changes.

func MergeHistograms 

func MergeHistograms(hs []*Histogram) *Histogram

MergeHistograms returns 1 histogram built from the given.

func NewHistogram 

func NewHistogram() *Histogram

NewHistogram returns new Histogram histogram.

func (*Histogram) Quantile 

func (h *Histogram) Quantile(phi float64) float64

Quantile returns the quantile value for the given phi.

func (*Histogram) Quantiles 

func (h *Histogram) Quantiles(dst, phis []float64) []float64

Quantiles appends quantile values to dst for the given phis.

func (*Histogram) Reset 

func (h *Histogram) Reset()

Reset resets the histogram.

func (*Histogram) Update 

func (h *Histogram) Update(v float64)

Update the histogram with v.

type Uint128 

type Uint128 struct {
	// contains filtered or unexported fields
}

Uint128 represents a uint128 using 2 uint64.

func NewUint128 

func NewUint128(hi, lo uint64) Uint128

func Uint128FromString 

func Uint128FromString(s string) (Uint128, error)

func Uint128FromUint64 

func Uint128FromUint64(v uint64) Uint128

func (Uint128) Add 

func (u Uint128) Add(x Uint128) Uint128

func (Uint128) AddCarry 

func (u Uint128) AddCarry(x Uint128, carry uint64) (Uint128, uint64)

func (Uint128) And 

func (u Uint128) And(x Uint128) Uint128

func (Uint128) Big 

func (u Uint128) Big() *big.Int

func (Uint128) Cmp 

func (u Uint128) Cmp(x Uint128) int

func (Uint128) Dec 

func (u Uint128) Dec() Uint128

func (Uint128) Equals 

func (u Uint128) Equals(x Uint128) bool

func (Uint128) Inc 

func (u Uint128) Inc() Uint128

func (Uint128) IsZero 

func (u Uint128) IsZero() bool

func (Uint128) Lsh 

func (u Uint128) Lsh(n uint) Uint128

func (Uint128) Mul 

func (u Uint128) Mul(x Uint128) Uint128

func (Uint128) MulFull 

func (a Uint128) MulFull(b Uint128) (Uint128, Uint128)

multiply 128-bit unsigned integers and return high and lower product

func (Uint128) Not 

func (u Uint128) Not() Uint128

func (Uint128) Or 

func (u Uint128) Or(x Uint128) Uint128

func (Uint128) Parts 

func (u Uint128) Parts() (uint64, uint64)

func (Uint128) Rsh 

func (u Uint128) Rsh(n uint) Uint128

func (Uint128) String 

func (u Uint128) String() string

func (Uint128) Sub 

func (u Uint128) Sub(x Uint128) Uint128

func (Uint128) SubBorrow 

func (u Uint128) SubBorrow(x Uint128, borrow uint64) (Uint128, uint64)

func (Uint128) Xor 

func (u Uint128) Xor(x Uint128) Uint128

type Uint256 

type Uint256 struct {
	// contains filtered or unexported fields
}

Uint256 represents a uint256 using 2 uint64.

func NewUint256 

func NewUint256(hi, lo Uint128) Uint256

func Uint256FromUint64 

func Uint256FromUint64(v uint64) Uint256

func (Uint256) Add 

func (u Uint256) Add(x Uint256) Uint256

func (Uint256) AddCarry 

func (u Uint256) AddCarry(x Uint256, carry uint64) (Uint256, uint64)

func (Uint256) And 

func (u Uint256) And(x Uint256) Uint256

func (Uint256) Big 

func (u Uint256) Big() *big.Int

func (Uint256) Cmp 

func (u Uint256) Cmp(x Uint256) int

func (Uint256) Dec 

func (u Uint256) Dec() Uint256

func (Uint256) Equals 

func (u Uint256) Equals(x Uint256) bool

func (Uint256) Inc 

func (u Uint256) Inc() Uint256

func (Uint256) IsZero 

func (u Uint256) IsZero() bool

func (Uint256) Lsh 

func (u Uint256) Lsh(n uint) Uint256

func (Uint256) Mul 

func (u Uint256) Mul(v Uint256) Uint256

func (Uint256) MulFull 

func (u Uint256) MulFull(x Uint256) (Uint256, Uint256)

func (Uint256) Not 

func (u Uint256) Not() Uint256

func (Uint256) Or 

func (u Uint256) Or(x Uint256) Uint256

func (Uint256) Parts 

func (u Uint256) Parts() (Uint128, Uint128)

func (Uint256) Rsh 

func (u Uint256) Rsh(n uint) Uint256

func (Uint256) String 

func (u Uint256) String() string

func (Uint256) Sub 

func (u Uint256) Sub(x Uint256) Uint256

func (Uint256) SubBorrow 

func (u Uint256) SubBorrow(x Uint256, borrow uint64) (Uint256, uint64)

func (Uint256) Xor 

func (u Uint256) Xor(x Uint256) Uint256

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