math

Documentation

Index

• func BigPow(a, b int64) *big.Int
• func MustParseBig256(s string) *big.Int
• func PaddedBigBytes(bigint *big.Int, n int) []byte
• func ParseBig256(s string) (*big.Int, bool)
• func ReadBits(bigint *big.Int, buf []byte)
• func TernaryXOR(a, b, c bool) bool
• func XOR(a, b bool) bool

Functions

func BigPow

func BigPow(a, b int64) *big.Int

BigPow returns a ** b as a big integer.

func MustParseBig256

func MustParseBig256(s string) *big.Int

MustParseBig256 parses s as a 256 bit big integer and panics if the string is invalid.

func PaddedBigBytes

func PaddedBigBytes(bigint *big.Int, n int) []byte

PaddedBigBytes encodes a big integer as a big-endian byte slice. The length of the slice is at least n bytes.

func ParseBig256

func ParseBig256(s string) (*big.Int, bool)

ParseBig256 parses s as a 256 bit integer in decimal or hexadecimal syntax. Leading zeros are accepted. The empty string parses as zero.

func ReadBits

func ReadBits(bigint *big.Int, buf []byte)

ReadBits encodes the absolute value of bigint as big-endian bytes. Callers must ensure that buf has enough space. If buf is too short the result will be incomplete.

func TernaryXOR

func TernaryXOR(a, b, c bool) bool

TernaryXOR operation

func XOR

func XOR(a, b bool) bool

XOR operation