uint128

package
v1.0.1 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jan 8, 2025 License: BSD-3-Clause, MIT Imports: 6 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	MaxUint64Str  = "18446744073709551615"
	MaxUint128Str = "340282366920938463463374607431768211455"

	MaxStrLen       = 39 // maximum number of digits in a 128-bit unsigned integer
	MaxStrLen64     = 20 // maximum number of digits in a 64-bit unsigned integer
	MaxSafeStrLen64 = 19 // maximum number of digits that can be safely parsed as a 64-bit unsigned integer

	ZeroStr = "0"
)

Variables

View Source 
var (
	Zero = Uint128{}

	Max   = Uint128{math.MaxUint64, math.MaxUint64}
	Max64 = Uint128{math.MaxUint64, 0}

	Pow10Uint64 = [...]uint64{
		1,
		10,
		100,
		1000,
		10000,
		100000,
		1000000,
		10000000,
		100000000,
		1000000000,
		10000000000,
		100000000000,
		1000000000000,
		10000000000000,
		100000000000000,
		1000000000000000,
		10000000000000000,
		100000000000000000,
		1000000000000000000,
		10000000000000000000,
	}

	Pow10Uint128 = [...]Uint128{
		{Lo: 1},
		{Lo: 10},
		{Lo: 100},
		{Lo: 1000},
		{Lo: 10000},
		{Lo: 100000},
		{Lo: 1000000},
		{Lo: 10000000},
		{Lo: 100000000},
		{Lo: 1000000000},
		{Lo: 10000000000},
		{Lo: 100000000000},
		{Lo: 1000000000000},
		{Lo: 10000000000000},
		{Lo: 100000000000000},
		{Lo: 1000000000000000},
		{Lo: 10000000000000000},
		{Lo: 100000000000000000},
		{Lo: 1000000000000000000},
		{Lo: 10000000000000000000},
		{Lo: 7766279631452241920, Hi: 5},
		{Lo: 3875820019684212736, Hi: 54},
		{Lo: 1864712049423024128, Hi: 542},
		{Lo: 200376420520689664, Hi: 5421},
		{Lo: 2003764205206896640, Hi: 54210},
		{Lo: 1590897978359414784, Hi: 542101},
		{Lo: 15908979783594147840, Hi: 5421010},
		{Lo: 11515845246265065472, Hi: 54210108},
		{Lo: 4477988020393345024, Hi: 542101086},
		{Lo: 7886392056514347008, Hi: 5421010862},
		{Lo: 5076944270305263616, Hi: 54210108624},
		{Lo: 13875954555633532928, Hi: 542101086242},
		{Lo: 9632337040368467968, Hi: 5421010862427},
		{Lo: 4089650035136921600, Hi: 54210108624275},
		{Lo: 4003012203950112768, Hi: 542101086242752},
		{Lo: 3136633892082024448, Hi: 5421010862427522},
		{Lo: 12919594847110692864, Hi: 54210108624275221},
		{Lo: 68739955140067328, Hi: 542101086242752217},
		{Lo: 687399551400673280, Hi: 5421010862427522170},
	}
)

Functions

func QuoRem256By128 

func QuoRem256By128(u Uint128, carry Uint128, v Uint128) (Uint128, Uint128, errors.Error)

fastQuo returns quotient and remainder of u/v

Types

type Uint128 

type Uint128 struct {
	Lo uint64
	Hi uint64
}

func FromBigInt 

func FromBigInt(i *big.Int) (Uint128, errors.Error)

func FromBytes 

func FromBytes(bs [16]byte) Uint128

func FromBytesBigEndian 

func FromBytesBigEndian(b [16]byte) Uint128

func FromString 

func FromString(s string) (Uint128, errors.Error)

func FromUint64 

func FromUint64(u uint64) Uint128

func QuoRem192By64 

func QuoRem192By64(u Uint128, carry uint64, v uint64) (Uint128, uint64, errors.Error)

QuoRem192By64 return q, r which: q must be a u128 u = q*v + r Returns error if u.carry >= v, because the result can't fit into u128

func SubUnsafe 

func SubUnsafe(u Uint128, v Uint128) Uint128

SubUnsafe returns u - v with u >= v must be called only when u >= v or the result will be incorrect

func (Uint128) Add 

func (self Uint128) Add(other Uint128) (Uint128, errors.Error)

func (Uint128) Add64 

func (self Uint128) Add64(other uint64) (Uint128, errors.Error)

func (Uint128) And 

func (self Uint128) And(other Uint128) Uint128

func (Uint128) And64 

func (self Uint128) And64(other uint64) Uint128

func (Uint128) AppendBytes 

func (self Uint128) AppendBytes(bs []byte) []byte

func (Uint128) AppendBytesBigEndian 

func (self Uint128) AppendBytesBigEndian(bs []byte) []byte

func (Uint128) BigInt 

func (self Uint128) BigInt() *big.Int

func (Uint128) BitLen 

func (self Uint128) BitLen() int

func (Uint128) Bytes 

func (self Uint128) Bytes() [16]byte

func (Uint128) BytesBigEndian 

func (self Uint128) BytesBigEndian() [16]byte

func (Uint128) Compare 

func (self Uint128) Compare(other Uint128) int

func (Uint128) Div 

func (self Uint128) Div(other Uint128) (Uint128, errors.Error)

func (Uint128) Div64 

func (self Uint128) Div64(other uint64) (Uint128, errors.Error)

func (Uint128) Equal 

func (self Uint128) Equal(other Uint128) bool

func (Uint128) IsZero 

func (self Uint128) IsZero() bool

func (Uint128) LeadingZeroBitsCount 

func (self Uint128) LeadingZeroBitsCount() int

func (Uint128) Lsh 

func (self Uint128) Lsh(n uint) Uint128

func (Uint128) MarshalText 

func (self Uint128) MarshalText() ([]byte, error)

func (Uint128) Mod 

func (self Uint128) Mod(other Uint128) (Uint128, errors.Error)

func (Uint128) Mod64 

func (self Uint128) Mod64(other uint64) (uint64, errors.Error)

func (Uint128) Mul 

func (self Uint128) Mul(other Uint128) (Uint128, errors.Error)

func (Uint128) Mul64 

func (self Uint128) Mul64(other uint64) (Uint128, errors.Error)

func (Uint128) MulCarry 

func (self Uint128) MulCarry(other Uint128) (Uint128, Uint128)

MulCarry returns self * other and carry.

func (Uint128) NonZeroBitsCount 

func (self Uint128) NonZeroBitsCount() int

func (Uint128) Or 

func (self Uint128) Or(other Uint128) Uint128

func (Uint128) Or64 

func (self Uint128) Or64(other uint64) Uint128

func (Uint128) PutBytes 

func (self Uint128) PutBytes(bs []byte) errors.Error

func (Uint128) PutBytesBigEndian 

func (self Uint128) PutBytesBigEndian(bs []byte) errors.Error

func (Uint128) QuoRem 

func (self Uint128) QuoRem(other Uint128) (Uint128, Uint128, errors.Error)

func (Uint128) QuoRem64 

func (self Uint128) QuoRem64(other uint64) (Uint128, uint64, errors.Error)

func (Uint128) ReverseBits 

func (self Uint128) ReverseBits() Uint128

func (Uint128) ReverseBytes 

func (self Uint128) ReverseBytes() Uint128

func (Uint128) RotateBitsLeft 

func (self Uint128) RotateBitsLeft(k int) Uint128

func (Uint128) RotateBitsRight 

func (self Uint128) RotateBitsRight(k int) Uint128

func (Uint128) Rsh 

func (self Uint128) Rsh(n uint) Uint128

func (*Uint128) Scan 

func (self *Uint128) Scan(s fmt.ScanState, ch rune) error

func (Uint128) String 

func (self Uint128) String() string

func (Uint128) StringToBuf 

func (self Uint128) StringToBuf(buf []byte) int

func (Uint128) Sub 

func (self Uint128) Sub(other Uint128) (Uint128, errors.Error)

func (Uint128) Sub64 

func (self Uint128) Sub64(other uint64) (Uint128, errors.Error)

func (Uint128) TrailingZeroBitsCount 

func (self Uint128) TrailingZeroBitsCount() int

func (Uint128) Uint64 

func (self Uint128) Uint64() (uint64, errors.Error)

func (*Uint128) UnmarshalText 

func (self *Uint128) UnmarshalText(b []byte) error

func (Uint128) Xor 

func (self Uint128) Xor(other Uint128) Uint128

func (Uint128) Xor64 

func (self Uint128) Xor64(other uint64) Uint128

Source Files

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