uint128

package

v1.0.9 Latest Latest Go to latest Published: Sep 7, 2020 License: GPL-3.0, GPL-3.0 Imports: 6 Imported by: 0

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Repository

github.com/palletone/go-palletone

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Documentation ¶

Constants ¶

This section is empty.

Variables ¶

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var MaxValue = New(^uint64(0), ^uint64(0))

MaxValue is a max value of uint128.

Functions ¶

func PopCount64 ¶

func PopCount64(x uint64) uint8

PopCount64, count how many bits of a binary form corresponding to a uint64 type number are 1

Types ¶

type Uint128 ¶

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

A Uint128 is an unsigned 128-bit number.

var Zero Uint128

Zero is a zero-valued uint128.

func From64 ¶

func From64(v uint64) Uint128

From64 converts v to a Uint128 value.

func FromBig ¶

func FromBig(i *big.Int) (u Uint128)

FromBig converts i to a Uint128 value. It panics if i is negative or overflows 128 bits.

func FromBytes ¶

func FromBytes(b []byte) Uint128

FromBytes converts b to a Uint128 value.

func New ¶

func New(lo, hi uint64) Uint128

New returns the Uint128 value (lo,hi).

func (Uint128) Add ¶

func (u Uint128) Add(v Uint128) Uint128

Add returns u+v.

func (Uint128) Add64 ¶

func (u Uint128) Add64(v uint64) Uint128

Add64 returns u+v.

func (Uint128) And ¶

func (u Uint128) And(v Uint128) Uint128

And returns u&v.

func (Uint128) And64 ¶

func (u Uint128) And64(v uint64) Uint128

And64 returns u&v.

func (Uint128) Big ¶

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

Big returns u as a *big.Int.

func (Uint128) BinaryStr ¶ added in v1.0.5

func (u Uint128) BinaryStr() string

String returns the base-2 representation of u as a string.

func (Uint128) Cmp ¶

func (u Uint128) Cmp(v Uint128) int

Cmp compares u and v and returns:

-1 if u <  v
 0 if u == v
+1 if u >  v

func (Uint128) Cmp64 ¶

func (u Uint128) Cmp64(v uint64) int

Cmp64 compares u and v and returns:

-1 if u <  v
 0 if u == v
+1 if u >  v

func (*Uint128) DecodeRLP ¶ added in v1.0.5

func (u *Uint128) DecodeRLP(s *rlp.Stream) error

func (Uint128) Div ¶

func (u Uint128) Div(v Uint128) Uint128

Div returns u/v.

func (Uint128) Div64 ¶

func (u Uint128) Div64(v uint64) Uint128

Div64 returns u/v.

func (*Uint128) EncodeRLP ¶ added in v1.0.5

func (u *Uint128) EncodeRLP(w io.Writer) error

func (Uint128) Equals ¶

func (u Uint128) Equals(v Uint128) bool

Equals returns true if u == v.

Uint128 values can be compared directly with ==, but use of the Equals method is preferred for consistency.

func (Uint128) Equals64 ¶

func (u Uint128) Equals64(v uint64) bool

Equals64 returns true if u == v.

func (Uint128) IsZero ¶

func (u Uint128) IsZero() bool

IsZero returns true if u == 0.

func (Uint128) Lsh ¶

func (u Uint128) Lsh(n uint) (s Uint128)

Lsh returns u<<n.

func (Uint128) Mul ¶

func (u Uint128) Mul(v Uint128) Uint128

Mul returns u*v.

func (Uint128) Mul64 ¶

func (u Uint128) Mul64(v uint64) Uint128

Mul64 returns u*v.

func (Uint128) Or ¶

func (u Uint128) Or(v Uint128) Uint128

Or returns u|v.

func (Uint128) Or64 ¶

func (u Uint128) Or64(v uint64) Uint128

Or64 returns u|v.

func (Uint128) PopCount ¶

func (u Uint128) PopCount() uint8

PopCount, count how many bits of a binary form corresponding to a Uint128 type number are 1

func (Uint128) PutBytes ¶

func (u Uint128) PutBytes(b []byte)

PutBytes stores u in b in little-endian order. It panics if len(b) < 16.

func (Uint128) QuoRem ¶

func (u Uint128) QuoRem(v Uint128) (q, r Uint128)

QuoRem returns q = u/v and r = u%v.

func (Uint128) QuoRem64 ¶

func (u Uint128) QuoRem64(v uint64) (q Uint128, r uint64)

QuoRem64 returns q = u/v and r = u%v.

func (Uint128) Rsh ¶

func (u Uint128) Rsh(n uint) (s Uint128)

Rsh returns u>>n.

func (Uint128) String ¶

func (u Uint128) String() string

String returns the base-10 representation of u as a string.

func (Uint128) Sub ¶

func (u Uint128) Sub(v Uint128) Uint128

Sub returns u-v.

func (Uint128) Sub64 ¶

func (u Uint128) Sub64(v uint64) Uint128

Sub64 returns u-v.

func (Uint128) Xor ¶

func (u Uint128) Xor(v Uint128) Uint128

Xor returns u^v.

func (Uint128) Xor64 ¶

func (u Uint128) Xor64(v uint64) Uint128

Xor64 returns u^v.

type Uint128Temp ¶ added in v1.0.5

type Uint128Temp struct {
	Hight uint64
	Low   uint64
}

Source Files ¶

View all Source files

uint128.go

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