binary

Documentation

Index

• Constants
• Variables
• func Fingerprint(slice []byte) []byte
• func GetInt64BE(src []byte) int64
• func GetInt64LE(src []byte) int64
• func GetUint64BE(src []byte) uint64
• func GetUint64LE(src []byte) uint64
• func Int64FromWord256(word Word256) int64
• func IsUint64SumOverflow(a, b uint64) bool
• func IsZeros(slice []byte) bool
• func LeftPadBytes(slice []byte, l int) []byte
• func PutInt64BE(dest []byte, i int64)
• func PutInt64LE(dest []byte, i int64)
• func PutUint64BE(dest []byte, i uint64)
• func PutUint64LE(dest []byte, i uint64)
• func RightPadBytes(slice []byte, l int) []byte
• func S256(x *big.Int) *big.Int
• func SearchUint64s(a []uint64, x uint64) int
• func SignExtend(back uint64, x *big.Int) *big.Int
• func Tuple256Split(t Tuple256) (Word256, Word256)
• func U256(x *big.Int) *big.Int
• func Uint64FromWord256(word Word256) uint64
• type HexBytes
  • func (hb HexBytes) MarshalText() ([]byte, error)
  • func (hb HexBytes) String() string
  • func (hb *HexBytes) UnmarshalText(hexBytes []byte) error
• type Tuple256
  • func (tuple Tuple256) Compare(other Tuple256) int
• type Tuple256Slice
  • func (p Tuple256Slice) Len() int
  • func (p Tuple256Slice) Less(i, j int) bool
  • func (p Tuple256Slice) Sort()
  • func (p Tuple256Slice) Swap(i, j int)
• type Uint64Slice
  • func (p Uint64Slice) Len() int
  • func (p Uint64Slice) Less(i, j int) bool
  • func (p Uint64Slice) Search(x uint64) int
  • func (p Uint64Slice) Sort()
  • func (p Uint64Slice) Swap(i, j int)
• type Word160
  • func (w Word160) Bytes() []byte
  • func (w Word160) Word256() (word256 Word256)
• type Word256
  • func Int64ToWord256(i int64) Word256
  • func LeftPadWord256(bz []byte) (word Word256)
  • func RightPadWord256(bz []byte) (word Word256)
  • func Uint64ToWord256(i uint64) Word256
  • func (w Word256) Bytes() []byte
  • func (w Word256) Compare(other Word256) int
  • func (w Word256) Copy() Word256
  • func (w Word256) IsZero() bool
  • func (w Word256) MarshalText() ([]byte, error)
  • func (w Word256) Postfix(n int) []byte
  • func (w Word256) Prefix(n int) []byte
  • func (w Word256) String() string
  • func (w *Word256) UnmarshalText(hexBytes []byte) error
  • func (w Word256) UnpadLeft() []byte
  • func (w Word256) UnpadRight() []byte
  • func (w Word256) Word160() (w160 Word160)
• type Words256
  • func (ws Words256) Len() int
  • func (ws Words256) Less(i, j int) bool
  • func (ws Words256) Swap(i, j int)

Constants

const Word160Length = 20

const Word256Length = 32

const Word256Word160Delta = 12

Variables

var (
	Zero256 = Word256{}
	One256  = LeftPadWord256([]byte{1})
)

var Big256 = big.NewInt(256)

var BigWord256Length = big.NewInt(Word256Length)

var Zero160 = Word160{}

Functions

func Fingerprint

func Fingerprint(slice []byte) []byte

func GetInt64BE

func GetInt64BE(src []byte) int64

func GetInt64LE

func GetInt64LE(src []byte) int64

func GetUint64BE

func GetUint64BE(src []byte) uint64

func GetUint64LE

func GetUint64LE(src []byte) uint64

func Int64FromWord256

func Int64FromWord256(word Word256) int64

func IsUint64SumOverflow

func IsUint64SumOverflow(a, b uint64) bool

Returns whether a + b would be a uint64 overflow

func IsZeros

func IsZeros(slice []byte) bool

func LeftPadBytes

func LeftPadBytes(slice []byte, l int) []byte

func PutInt64BE

func PutInt64BE(dest []byte, i int64)

func PutInt64LE

func PutInt64LE(dest []byte, i int64)

func PutUint64BE

func PutUint64BE(dest []byte, i uint64)

func PutUint64LE

func PutUint64LE(dest []byte, i uint64)

func RightPadBytes

func RightPadBytes(slice []byte, l int) []byte

func S256

func S256(x *big.Int) *big.Int

Interprets a positive big.Int as a 256-bit two's complement signed integer

func SearchUint64s

func SearchUint64s(a []uint64, x uint64) int

func SignExtend

func SignExtend(back uint64, x *big.Int) *big.Int

Treats the positive big int x as if it contains an embedded a back + 1 byte signed integer in its least significant bits and extends that sign

func Tuple256Split

func Tuple256Split(t Tuple256) (Word256, Word256)

func U256

func U256(x *big.Int) *big.Int

Converts a possibly negative big int x into a positive big int encoding a twos complement representation of x truncated to 32 bytes

func Uint64FromWord256

func Uint64FromWord256(word Word256) uint64

Types

type HexBytes

type HexBytes []byte

func (HexBytes) MarshalText

func (hb HexBytes) MarshalText() ([]byte, error)

func (HexBytes) String

func (hb HexBytes) String() string

func (*HexBytes) UnmarshalText

func (hb *HexBytes) UnmarshalText(hexBytes []byte) error

type Tuple256

type Tuple256 struct {
	First  Word256
	Second Word256
}

func (Tuple256) Compare

func (tuple Tuple256) Compare(other Tuple256) int

type Tuple256Slice

type Tuple256Slice []Tuple256

func (Tuple256Slice) Len

func (p Tuple256Slice) Len() int

func (Tuple256Slice) Less

func (p Tuple256Slice) Less(i, j int) bool

func (Tuple256Slice) Sort

func (p Tuple256Slice) Sort()

func (Tuple256Slice) Swap

func (p Tuple256Slice) Swap(i, j int)

type Uint64Slice

type Uint64Slice []uint64

func (Uint64Slice) Len

func (p Uint64Slice) Len() int

func (Uint64Slice) Less

func (p Uint64Slice) Less(i, j int) bool

func (Uint64Slice) Search

func (p Uint64Slice) Search(x uint64) int

func (Uint64Slice) Sort

func (p Uint64Slice) Sort()

func (Uint64Slice) Swap

func (p Uint64Slice) Swap(i, j int)

type Word160

type Word160 [Word160Length]byte

func (Word160) Bytes

func (w Word160) Bytes() []byte

func (Word160) Word256

func (w Word160) Word256() (word256 Word256)

Pad a Word160 on the left and embed it in a Word256 (as it is for account addresses in EVM)

type Word256

type Word256 [Word256Length]byte

func Int64ToWord256

func Int64ToWord256(i int64) Word256

func LeftPadWord256

func LeftPadWord256(bz []byte) (word Word256)

func RightPadWord256

func RightPadWord256(bz []byte) (word Word256)

func Uint64ToWord256

func Uint64ToWord256(i uint64) Word256

func (Word256) Bytes

func (w Word256) Bytes() []byte

func (Word256) Compare

func (w Word256) Compare(other Word256) int

func (Word256) Copy

func (w Word256) Copy() Word256

func (Word256) IsZero

func (w Word256) IsZero() bool

func (Word256) MarshalText

func (w Word256) MarshalText() ([]byte, error)

func (Word256) Postfix

func (w Word256) Postfix(n int) []byte

func (Word256) Prefix

func (w Word256) Prefix(n int) []byte

copied.

func (Word256) String

func (w Word256) String() string

func (*Word256) UnmarshalText

func (w *Word256) UnmarshalText(hexBytes []byte) error

func (Word256) UnpadLeft

func (w Word256) UnpadLeft() []byte

func (Word256) UnpadRight

func (w Word256) UnpadRight() []byte

func (Word256) Word160

func (w Word256) Word160() (w160 Word160)

Get a Word160 embedded a Word256 and padded on the left (as it is for account addresses in EVM)

type Words256

type Words256 []Word256

func (Words256) Len

func (ws Words256) Len() int

func (Words256) Less

func (ws Words256) Less(i, j int) bool

func (Words256) Swap

func (ws Words256) Swap(i, j int)