common

package
v0.11.1-0...-daaff9c Latest Latest
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 Go to latest Published: Jul 17, 2020 License: GPL-3.0 Imports: 28 Imported by: 0

Documentation

Overview

Package common contains various helper functions.

Index

Constants

View Source 
const (
	MainNetAddressPrefix = "lat"
	TestNetAddressPrefix = "lax"
)
View Source 
const (
	STATIC_VALIDATOR_MODE = "static"
	INNER_VALIDATOR_MODE  = "inner"
	PPOS_VALIDATOR_MODE   = "ppos"
)
View Source 
const (
	// HashLength is the expected length of the hash
	HashLength        = 32
	VersionSignLength = 65
	// AddressLength is the expected length of the address
	AddressLength          = 20
	BlockConfirmSignLength = 65
	ExtraSeal              = 65
)

Lengths of hashes and addresses in bytes.

Variables

View Source 
var (
	Big1   = big.NewInt(1)
	Big2   = big.NewInt(2)
	Big3   = big.NewInt(3)
	Big0   = big.NewInt(0)
	Big32  = big.NewInt(32)
	Big100 = big.NewInt(100)
	Big256 = big.NewInt(256)
	Big257 = big.NewInt(257)
)

Common big integers often used

View Source 
var (
	OkCode           = uint32(0)
	NoErr            = &BizError{Code: OkCode, Msg: "ok"}
	InternalError    = &BizError{Code: 1, Msg: "System error"}
	NotFound         = &BizError{Code: 2, Msg: "Object not found"}
	InvalidParameter = &BizError{Code: 3, Msg: "Invalid parameter"}
)
View Source 
var (
	//  the meter for the protocol of eth
	StatusEgressTrafficMeter          = metrics.NewRegisteredMeter("p2p/flow/eth/status/OutboundTraffic", nil)
	NewBlockHashesEgressTrafficMeter  = metrics.NewRegisteredMeter("p2p/flow/eth/newBlockHashes/OutboundTraffic", nil)
	TxTrafficMeter                    = metrics.NewRegisteredMeter("p2p/flow/eth/tx/OutboundTraffic", nil)
	GetBlockHeadersEgressTrafficMeter = metrics.NewRegisteredMeter("p2p/flow/eth/getBlockHeaders/OutboundTraffic", nil)
	BlockHeadersEgressTrafficMeter    = metrics.NewRegisteredMeter("p2p/flow/eth/blockHeaders/OutboundTraffic", nil)
	GetBlockBodiesEgressTrafficMeter  = metrics.NewRegisteredMeter("p2p/flow/eth/getBlockBodies/OutboundTraffic", nil)
	BlockBodiesEgressTrafficMeter     = metrics.NewRegisteredMeter("p2p/flow/eth/blockBodies/OutboundTraffic", nil)
	NewBlockEgressTrafficMeter        = metrics.NewRegisteredMeter("p2p/flow/eth/newBlock/OutboundTraffic", nil)
	PrepareBlockEgressTrafficMeter    = metrics.NewRegisteredMeter("p2p/flow/eth/prepareBlock/OutboundTraffic", nil)
	BlockSignatureEgressTrafficMeter  = metrics.NewRegisteredMeter("p2p/flow/eth/blockSignature/OutboundTraffic", nil)
	PongEgressTrafficMeter            = metrics.NewRegisteredMeter("p2p/flow/eth/pong/OutboundTraffic", nil)
	GetNodeDataEgressTrafficMeter     = metrics.NewRegisteredMeter("p2p/flow/eth/getNodeData/OutboundTraffic", nil)
	NodeDataEgressTrafficMeter        = metrics.NewRegisteredMeter("p2p/flow/eth/nodeData/OutboundTraffic", nil)
	GetReceiptsEgressTrafficMeter     = metrics.NewRegisteredMeter("p2p/flow/eth/getReceipts/OutboundTraffic", nil)
	ReceiptsTrafficMeter              = metrics.NewRegisteredMeter("p2p/flow/eth/receipts/OutboundTraffic", nil)

	// the meter for the protocol of cbft
	PrepareBlockCBFTEgressTrafficMeter   = metrics.NewRegisteredMeter("p2p/flow/cbft/PrepareBlock/OutboundTraffic", nil)
	PrepareVoteEgressTrafficMeter        = metrics.NewRegisteredMeter("p2p/flow/cbft/PrepareVote/OutboundTraffic", nil)
	ViewChangeEgressTrafficMeter         = metrics.NewRegisteredMeter("p2p/flow/cbft/ViewChange/OutboundTraffic", nil)
	GetPrepareBlockEgressTrafficMeter    = metrics.NewRegisteredMeter("p2p/flow/cbft/GetPrepareBlock/OutboundTraffic", nil)
	PrepareBlockHashEgressTrafficMeter   = metrics.NewRegisteredMeter("p2p/flow/cbft/PrepareBlockHash/OutboundTraffic", nil)
	GetPrepareVoteEgressTrafficMeter     = metrics.NewRegisteredMeter("p2p/flow/cbft/GetPrepareVote/OutboundTraffic", nil)
	PrepareVotesEgressTrafficMeter       = metrics.NewRegisteredMeter("p2p/flow/cbft/PrepareVotes/OutboundTraffic", nil)
	GetBlockQuorumCertEgressTrafficMeter = metrics.NewRegisteredMeter("p2p/flow/cbft/GetBlockQuorumCert/OutboundTraffic", nil)
	BlockQuorumCertEgressTrafficMeter    = metrics.NewRegisteredMeter("p2p/flow/cbft/BlockQuorumCert/OutboundTraffic", nil)
	CBFTStatusEgressTrafficMeter         = metrics.NewRegisteredMeter("p2p/flow/cbft/CBFTStatus/OutboundTraffic", nil)
	GetQCBlockListEgressTrafficMeter     = metrics.NewRegisteredMeter("p2p/flow/cbft/GetQCBlockList/OutboundTraffic", nil)
	QCBlockListEgressTrafficMeter        = metrics.NewRegisteredMeter("p2p/flow/cbft/QCBlockList/OutboundTraffic", nil)
)
View Source 
var (
	ZeroHash     = HexToHash(Hash{}.String())
	ZeroAddr     = Address{}
	ZeroNodeAddr = NodeAddress{}
)

Functions

func AbsolutePath 

func AbsolutePath(datadir string, filename string) string

AbsolutePath returns datadir + filename, or filename if it is absolute.

func AnyContains 

func AnyContains(array []string, vals []string) bool

func Beautiful 

func Beautiful(t time.Time) string

func Bytes2Hex 

func Bytes2Hex(d []byte) string

Bytes2Hex returns the hexadecimal encoding of d.

func BytesToFloat32 

func BytesToFloat32(bytes []byte) float32

func BytesToFloat64 

func BytesToFloat64(bytes []byte) float64

func BytesToInt32 

func BytesToInt32(b []byte) int32

func BytesToInt64 

func BytesToInt64(b []byte) int64

func BytesToUint32 

func BytesToUint32(b []byte) uint32

func BytesToUint64 

func BytesToUint64(b []byte) uint64

func CheckAddressPrefix 

func CheckAddressPrefix(s string) bool

func CopyBytes 

func CopyBytes(b []byte) (copiedBytes []byte)

CopyBytes returns an exact copy of the provided bytes.

func DecodeError 

func DecodeError(err error) (uint32, string)

func FileExist 

func FileExist(filePath string) bool

FileExist checks if a file exists at filePath.

func Float32ToBytes 

func Float32ToBytes(float float32) []byte

func Float64ToBytes 

func Float64ToBytes(float float64) []byte

func FromHex 

func FromHex(s string) []byte

FromHex returns the bytes represented by the hexadecimal string s. s may be prefixed with "0x".

func GetAddressPrefix 

func GetAddressPrefix() string

func Hex2Bytes 

func Hex2Bytes(str string) []byte

Hex2Bytes returns the bytes represented by the hexadecimal string str.

func Int32ToBytes 

func Int32ToBytes(n int32) []byte

func Int64ToBytes 

func Int64ToBytes(n int64) []byte

func IsBech32Address 

func IsBech32Address(s string) bool

func IsHexAddress deprecated 

func IsHexAddress(s string) bool

Deprecated: address to string is use bech32 now IsHexAddress verifies whether a string can represent a valid hex-encoded Ethereum address or not.

func LeftPadBytes 

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

LeftPadBytes zero-pads slice to the left up to length l.

func LoadJSON 

func LoadJSON(file string, val interface{}) error

LoadJSON reads the given file and unmarshals its content.

func LocalIPv4s 

func LocalIPv4s() []string

func Millis 

func Millis(t time.Time) int64

func MillisToString 

func MillisToString(t int64) string

func MillisToTime 

func MillisToTime(millis int64) time.Time

func MustRlpEncode 

func MustRlpEncode(val interface{}) []byte

func PrintDepricationWarning 

func PrintDepricationWarning(str string)

PrintDepricationWarning prinst the given string in a box using fmt.Println.

func Report 

func Report(extra ...interface{})

Report gives off a warning requesting the user to submit an issue to the github tracker.

func RightPadBytes 

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

RightPadBytes zero-pads slice to the right up to length l.

func SetAddressPrefix 

func SetAddressPrefix(s string)

func StringsContains 

func StringsContains(array []string, val string) (index int)

func ToHex deprecated 

func ToHex(b []byte) string

ToHex returns the hex representation of b, prefixed with '0x'. For empty slices, the return value is "0x0".

Deprecated: use hexutil.Encode instead.

func ToHexArray 

func ToHexArray(b [][]byte) []string

ToHexArray creates a array of hex-string based on []byte

func Uint16ToBytes 

func Uint16ToBytes(val uint16) []byte

func Uint32ToBytes 

func Uint32ToBytes(val uint32) []byte

func Uint64ToBytes 

func Uint64ToBytes(val uint64) []byte

Types

type Address 

type Address [AddressLength]byte

Address represents the 20 byte address of an Ethereum account.

func Bech32ToAddress 

func Bech32ToAddress(s string) (Address, error)

MustBech32ToAddress returns Address with byte values of s. If s is Decode fail, it will return zero address.

func BigToAddress 

func BigToAddress(b *big.Int) Address

BigToAddress returns Address with byte values of b. If b is larger than len(h), b will be cropped from the left.

func BytesToAddress 

func BytesToAddress(b []byte) Address

BytesToAddress returns Address with value b. If b is larger than len(h), b will be cropped from the left.

func HexToAddress deprecated 

func HexToAddress(s string) Address

Deprecated: address to string is use bech32 now HexToAddress returns Address with byte values of s. If s is larger than len(h), s will be cropped from the left.

func MustBech32ToAddress 

func MustBech32ToAddress(s string) Address

MustBech32ToAddress returns Address with byte values of s. If s is Decode fail, it will return zero address.

func (Address) Bech32 

func (a Address) Bech32() string

func (Address) Bech32WithPrefix 

func (a Address) Bech32WithPrefix(prefix string) string

func (Address) Big 

func (a Address) Big() *big.Int

Big converts an address to a big integer.

func (Address) Bytes 

func (a Address) Bytes() []byte

Bytes gets the string representation of the underlying address.

func (Address) Format 

func (a Address) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (Address) Hash 

func (a Address) Hash() Hash

Hash converts an address to a hash by left-padding it with zeros.

func (Address) Hex deprecated 

func (a Address) Hex() string

Deprecated: address to string is use bech32 now Hex returns an EIP55-compliant hex string representation of the address.it's use for node address

func (Address) HexWithNoPrefix deprecated 

func (a Address) HexWithNoPrefix() string

Deprecated: address to string is use bech32 now

func (Address) MarshalText 

func (a Address) MarshalText() ([]byte, error)

MarshalText returns the hex representation of a.

func (*Address) Scan 

func (a *Address) Scan(src interface{}) error

Scan implements Scanner for database/sql.

func (*Address) SetBytes 

func (a *Address) SetBytes(b []byte)

SetBytes sets the address to the value of b. If b is larger than len(a) it will panic.

func (Address) String 

func (a Address) String() string

String implements fmt.Stringer.

func (*Address) UnmarshalJSON 

func (a *Address) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Address) UnmarshalText 

func (a *Address) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (Address) Value 

func (a Address) Value() (driver.Value, error)

Value implements valuer for database/sql.

type AddressOutput 

type AddressOutput struct {
	MainNet string `json:"mainnet"`
	TestNet string `json:"testnet"`
}

func NewAddressOutput 

func NewAddressOutput(add Address) AddressOutput

func (AddressOutput) Address 

func (a AddressOutput) Address() (Address, error)

func (AddressOutput) Print 

func (a AddressOutput) Print()

type AtomicBool 

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

AtomicBool is a wrapper around uint32 for usage as a boolean value with atomic access.

func (*AtomicBool) IsSet 

func (ab *AtomicBool) IsSet() bool

IsSet returns wether the current boolean value is true.

func (*AtomicBool) Set 

func (ab *AtomicBool) Set(value bool)

Set sets the value of the bool regardless of the previous value.

func (*AtomicBool) TrySet 

func (ab *AtomicBool) TrySet(value bool) bool

TrySet sets the value of the bool and returns wether the value changed.

type BizError 

type BizError struct {
	Code uint32
	Msg  string
}

business error, Gas will not be returned back to caller

func NewBizError 

func NewBizError(code uint32, text string) *BizError

func (*BizError) AppendMsg 

func (be *BizError) AppendMsg(msg string)

func (*BizError) Error 

func (e *BizError) Error() string

func (*BizError) Wrap 

func (be *BizError) Wrap(text string) *BizError

func (*BizError) Wrapf 

func (be *BizError) Wrapf(format string, a ...interface{}) *BizError

type BlockConfirmSign 

type BlockConfirmSign [BlockConfirmSignLength]byte

func NewBlockConfirmSign 

func NewBlockConfirmSign(signSlice []byte) *BlockConfirmSign

func (*BlockConfirmSign) Bytes 

func (sig *BlockConfirmSign) Bytes() []byte

func (BlockConfirmSign) MarshalText 

func (a BlockConfirmSign) MarshalText() ([]byte, error)

MarshalText returns the hex representation of a.

func (*BlockConfirmSign) SetBytes 

func (sig *BlockConfirmSign) SetBytes(signSlice []byte)

func (*BlockConfirmSign) String 

func (sig *BlockConfirmSign) String() string

func (*BlockConfirmSign) UnmarshalJSON 

func (a *BlockConfirmSign) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*BlockConfirmSign) UnmarshalText 

func (a *BlockConfirmSign) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

type Hash 

type Hash [HashLength]byte

Hash represents the 32 byte Keccak256 hash of arbitrary data.

func BigToHash 

func BigToHash(b *big.Int) Hash

BigToHash sets byte representation of b to hash. If b is larger than len(h), b will be cropped from the left.

func BytesToHash 

func BytesToHash(b []byte) Hash

BytesToHash sets b to hash. If b is larger than len(h), b will be cropped from the left.

func GenerateKVHash 

func GenerateKVHash(k, v []byte, oldHash Hash) Hash

func HexToHash 

func HexToHash(s string) Hash

HexToHash sets byte representation of s to hash. If b is larger than len(h), b will be cropped from the left.

func RlpHash 

func RlpHash(x interface{}) (h Hash)

func (Hash) Big 

func (h Hash) Big() *big.Int

Big converts a hash to a big integer.

func (Hash) Bytes 

func (h Hash) Bytes() []byte

Bytes gets the byte representation of the underlying hash.

func (Hash) Format 

func (h Hash) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (Hash) Generate 

func (h Hash) Generate(rand *rand.Rand, size int) reflect.Value

Generate implements testing/quick.Generator.

func (Hash) Hex 

func (h Hash) Hex() string

Hex converts a hash to a hex string.

func (Hash) HexWithNoPrefix 

func (h Hash) HexWithNoPrefix() string

Hex converts a hash to a hex string with no prefix of 0x.

func (Hash) MarshalText 

func (h Hash) MarshalText() ([]byte, error)

MarshalText returns the hex representation of h.

func (*Hash) Scan 

func (h *Hash) Scan(src interface{}) error

Scan implements Scanner for database/sql.

func (*Hash) SetBytes 

func (h *Hash) SetBytes(b []byte)

SetBytes sets the hash to the value of b. If b is larger than len(h), b will be cropped from the left.

func (Hash) String 

func (h Hash) String() string

String implements the stringer interface and is used also by the logger when doing full logging into a file.

func (Hash) TerminalString 

func (h Hash) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.

func (*Hash) UnmarshalJSON 

func (h *Hash) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Hash) UnmarshalText 

func (h *Hash) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (Hash) Value 

func (h Hash) Value() (driver.Value, error)

Value implements valuer for database/sql.

type MixedcaseAddress 

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

MixedcaseAddress retains the original string, which may or may not be correctly checksummed

func NewMixedcaseAddress 

func NewMixedcaseAddress(addr Address) MixedcaseAddress

NewMixedcaseAddress constructor (mainly for testing)

func NewMixedcaseAddressFromString 

func NewMixedcaseAddressFromString(hexaddr string) (*MixedcaseAddress, error)

NewMixedcaseAddressFromString is mainly meant for unit-testing

func (*MixedcaseAddress) Address 

func (ma *MixedcaseAddress) Address() Address

Address returns the address

func (*MixedcaseAddress) MarshalJSON 

func (ma *MixedcaseAddress) MarshalJSON() ([]byte, error)

MarshalJSON marshals the original value

func (*MixedcaseAddress) Original 

func (ma *MixedcaseAddress) Original() string

Original returns the mixed-case input string

func (*MixedcaseAddress) String 

func (ma *MixedcaseAddress) String() string

String implements fmt.Stringer

func (*MixedcaseAddress) UnmarshalJSON 

func (ma *MixedcaseAddress) UnmarshalJSON(input []byte) error

UnmarshalJSON parses MixedcaseAddress

func (*MixedcaseAddress) ValidChecksum 

func (ma *MixedcaseAddress) ValidChecksum() bool

ValidChecksum returns true if the address has valid checksum

type NodeAddress 

type NodeAddress Address

func BytesToNodeAddress 

func BytesToNodeAddress(b []byte) NodeAddress

BytesToAddress returns Address with value b. If b is larger than len(h), b will be cropped from the left.

func HexToNodeAddress 

func HexToNodeAddress(s string) NodeAddress

HexToNodeAddress returns NodeAddress with byte values of s. If s is larger than len(h), s will be cropped from the left.

func (NodeAddress) Big 

func (a NodeAddress) Big() *big.Int

Big converts an address to a big integer.

func (NodeAddress) Bytes 

func (a NodeAddress) Bytes() []byte

Bytes gets the string representation of the underlying address.

func (NodeAddress) Format 

func (a NodeAddress) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (NodeAddress) Hash 

func (a NodeAddress) Hash() Hash

Hash converts an address to a hash by left-padding it with zeros.

func (NodeAddress) Hex 

func (a NodeAddress) Hex() string

Hex returns an EIP55-compliant hex string representation of the address.

func (NodeAddress) HexWithNoPrefix 

func (a NodeAddress) HexWithNoPrefix() string

func (NodeAddress) MarshalText 

func (a NodeAddress) MarshalText() ([]byte, error)

MarshalText returns the hex representation of a.

func (*NodeAddress) Scan 

func (a *NodeAddress) Scan(src interface{}) error

Scan implements Scanner for database/sql.

func (*NodeAddress) SetBytes 

func (a *NodeAddress) SetBytes(b []byte)

SetBytes sets the address to the value of b. If b is larger than len(a) it will panic.

func (NodeAddress) String 

func (a NodeAddress) String() string

String implements fmt.Stringer.

func (*NodeAddress) UnmarshalJSON 

func (a *NodeAddress) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*NodeAddress) UnmarshalText 

func (a *NodeAddress) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (NodeAddress) Value 

func (a NodeAddress) Value() (driver.Value, error)

Value implements valuer for database/sql.

type PrettyAge 

type PrettyAge time.Time

PrettyAge is a pretty printed version of a time.Duration value that rounds the values up to a single most significant unit, days/weeks/years included.

func (PrettyAge) String 

func (t PrettyAge) String() string

String implements the Stringer interface, allowing pretty printing of duration values rounded to the most significant time unit.

type PrettyDuration 

type PrettyDuration time.Duration

PrettyDuration is a pretty printed version of a time.Duration value that cuts the unnecessary precision off from the formatted textual representation.

func (PrettyDuration) String 

func (d PrettyDuration) String() string

String implements the Stringer interface, allowing pretty printing of duration values rounded to three decimals.

type StorageSize 

type StorageSize float64

StorageSize is a wrapper around a float value that supports user friendly formatting.

func (StorageSize) String 

func (s StorageSize) String() string

String implements the stringer interface.

func (StorageSize) TerminalString 

func (s StorageSize) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.

type Timer 

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

func NewTimer 

func NewTimer() *Timer

func (*Timer) Begin 

func (t *Timer) Begin()

func (*Timer) End 

func (t *Timer) End() float64

type UnprefixedAddress 

type UnprefixedAddress Address

UnprefixedAddress allows marshaling an Address without 0x prefix.

func (UnprefixedAddress) MarshalText 

func (a UnprefixedAddress) MarshalText() ([]byte, error)

MarshalText encodes the address as hex.

func (*UnprefixedAddress) UnmarshalText 

func (a *UnprefixedAddress) UnmarshalText(input []byte) error

UnmarshalText decodes the address from hex. The 0x prefix is optional.

type UnprefixedHash 

type UnprefixedHash Hash

UnprefixedHash allows marshaling a Hash without 0x prefix.

func (UnprefixedHash) MarshalText 

func (h UnprefixedHash) MarshalText() ([]byte, error)

MarshalText encodes the hash as hex.

func (*UnprefixedHash) UnmarshalText 

func (h *UnprefixedHash) UnmarshalText(input []byte) error

UnmarshalText decodes the hash from hex. The 0x prefix is optional.

type VersionSign 

type VersionSign [VersionSignLength]byte

func BytesToVersionSign 

func BytesToVersionSign(b []byte) VersionSign

func HexSign 

func HexSign(in string) (VersionSign, error)

HexID converts a hex string to a NodeID. The string may be prefixed with 0x.

func (VersionSign) Bytes 

func (s VersionSign) Bytes() []byte

func (VersionSign) Format 

func (s VersionSign) Format(st fmt.State, c rune)

func (VersionSign) Hex 

func (s VersionSign) Hex() string

func (VersionSign) HexWithNoPrefix 

func (s VersionSign) HexWithNoPrefix() string

func (VersionSign) MarshalText 

func (s VersionSign) MarshalText() ([]byte, error)

MarshalText implements the encoding.TextMarshaler interface.

func (*VersionSign) SetBytes 

func (s *VersionSign) SetBytes(b []byte)

func (VersionSign) String 

func (s VersionSign) String() string

func (VersionSign) TerminalString 

func (s VersionSign) TerminalString() string

func (*VersionSign) UnmarshalText 

func (s *VersionSign) UnmarshalText(text []byte) error

UnmarshalText implements the encoding.TextUnmarshaler interface.

Source Files

View all Source files

Directories

Path Synopsis
Package bitutil implements fast bitwise operations.
 Package bitutil implements fast bitwise operations.
Package compiler wraps the Solidity compiler executable (solc).
 Package compiler wraps the Solidity compiler executable (solc).
Package hexutil implements hex encoding with 0x prefix.
 Package hexutil implements hex encoding with 0x prefix.
Package math provides integer math utilities.
 Package math provides integer math utilities.
Package mclock is a wrapper for a monotonic clock source
 Package mclock is a wrapper for a monotonic clock source

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