utils

Documentation

Index

• Constants
• Variables
• func BitsOnCount(b []byte) int
• func Bytes4ToUint32(bytes4 [4]byte) uint32
• func BytesToBytes4(b []byte) (ret [4]byte)
• func CompressSnappy(data []byte) []byte
• func DecodeSSZSnappy(dst ssz.Unmarshaler, src []byte, version int) error
• func DecompressSnappy(data []byte) ([]byte, error)
• func EncodeSSZSnappy(data ssz.Marshaler) ([]byte, error)
• func ExtractSlotFromSerializedBeaconState(beaconState []byte) (uint64, error)
• func FlipBitOn(b []byte, i int)
• func GetBitlistLength(b []byte) int
• func IntegerSquareRoot(n uint64) uint64
• func IntersectionOfSortedSets(v1, v2 []uint64) []uint64
• func IsBitOn(b []byte, idx int) bool
• func IsNonStrictSupersetBitlist(a, b []byte) bool
• func IsOverlappingSSZBitlist(a, b []byte) bool
• func IsPowerOf2(n uint64) bool
• func IsValidMerkleBranch(leaf libcommon.Hash, branch []libcommon.Hash, depth uint64, index uint64, ...) bool
• func KzgCommitmentToVersionedHash(kzgCommitment libcommon.Bytes48) (libcommon.Hash, error)
• func MergeBitlists(a, b []byte)
• func PowerOf2(n uint64) uint64
• func PreparateRootsForHashing(roots []libcommon.Hash) [][32]byte
• func ReverseOfByteSlice(b []byte) (out []byte)
• func Sha256(data []byte, extras ...[]byte) [32]byte
• func Uint32ToBytes4(n uint32) (ret [4]byte)
• func Uint64ToLE(i uint64) []byte
• type HashFunc
  • func OptimizedSha256NotThreadSafe() HashFunc

Constants

const VERSIONED_HASH_VERSION_KZG byte = byte(1)

Variables

var IsSysLittleEndian bool

Functions

func BitsOnCount

func BitsOnCount(b []byte) int

func Bytes4ToUint32

func Bytes4ToUint32(bytes4 [4]byte) uint32

func BytesToBytes4

func BytesToBytes4(b []byte) (ret [4]byte)

func CompressSnappy

func CompressSnappy(data []byte) []byte

func DecodeSSZSnappy

func DecodeSSZSnappy(dst ssz.Unmarshaler, src []byte, version int) error

func DecompressSnappy

func DecompressSnappy(data []byte) ([]byte, error)

func EncodeSSZSnappy

func EncodeSSZSnappy(data ssz.Marshaler) ([]byte, error)

func ExtractSlotFromSerializedBeaconState

func ExtractSlotFromSerializedBeaconState(beaconState []byte) (uint64, error)

func FlipBitOn

func FlipBitOn(b []byte, i int)

func GetBitlistLength

func GetBitlistLength(b []byte) int

getBitlistLength return the amount of bits in given bitlist.

func IntegerSquareRoot

func IntegerSquareRoot(n uint64) uint64

func IntersectionOfSortedSets

func IntersectionOfSortedSets(v1, v2 []uint64) []uint64

func IsBitOn

func IsBitOn(b []byte, idx int) bool

func IsNonStrictSupersetBitlist

func IsNonStrictSupersetBitlist(a, b []byte) bool

IsNonStrictSupersetBitlist checks if bitlist 'a' is a non-strict superset of bitlist 'b'

func IsOverlappingSSZBitlist

func IsOverlappingSSZBitlist(a, b []byte) bool

IsOverlappingSSZBitlist checks if bitlist 'a' and bitlist 'b' have any overlapping bits However, it ignores the last bits in the last byte.

func IsPowerOf2

func IsPowerOf2(n uint64) bool

func IsValidMerkleBranch

func IsValidMerkleBranch(leaf libcommon.Hash, branch []libcommon.Hash, depth uint64, index uint64, root [32]byte) bool

Check if leaf at index verifies against the Merkle root and branch

func KzgCommitmentToVersionedHash

func KzgCommitmentToVersionedHash(kzgCommitment libcommon.Bytes48) (libcommon.Hash, error)

func MergeBitlists

func MergeBitlists(a, b []byte)

func PowerOf2

func PowerOf2(n uint64) uint64

func PreparateRootsForHashing

func PreparateRootsForHashing(roots []libcommon.Hash) [][32]byte

func ReverseOfByteSlice

func ReverseOfByteSlice(b []byte) (out []byte)

func Sha256

func Sha256(data []byte, extras ...[]byte) [32]byte

General purpose Sha256

func Uint32ToBytes4

func Uint32ToBytes4(n uint32) (ret [4]byte)

func Uint64ToLE

func Uint64ToLE(i uint64) []byte

Types

type HashFunc

type HashFunc func(data []byte, extras ...[]byte) [32]byte

func OptimizedSha256NotThreadSafe

func OptimizedSha256NotThreadSafe() HashFunc

Optimized Sha256, avoid pool.put/pool.get, meant for intensive operations. this version is not thread safe