twoscomplement

package

v1.0.0 Latest Latest Go to latest Published: Sep 28, 2022 License: GPL-3.0 Imports: 2 Imported by: 10

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Repository

github.com/ME-MotherEarth/me-bigint

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Documentation ¶

Index ¶

func CopyAlignRight(input []byte, targetLength int) []byte
func FromBytes(twosBytes []byte) *big.Int
func SetBytes(z *big.Int, twosBytes []byte) *big.Int
func ToBytes(bi *big.Int) []byte
func ToBytesOfLength(i *big.Int, bytesLength int) ([]byte, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CopyAlignRight ¶

func CopyAlignRight(input []byte, targetLength int) []byte

CopyAlignRight yields a copy of the bytes, of specific length. If output is longer than input, it will pad left with zeroes. If output if shorter than input, input will be trimmed to the left. The right-most bytes always remain in place.

func FromBytes ¶

func FromBytes(twosBytes []byte) *big.Int

FromBytes converts a byte array to a number. Interprets input as a 2's complement representation if the first bit (most significant) is 1. Big endian.

func SetBytes ¶

func SetBytes(z *big.Int, twosBytes []byte) *big.Int

SetBytes changes z to be the number represented as bytes in 2's complement, and returns z. Big endian.

func ToBytes ¶

func ToBytes(bi *big.Int) []byte

ToBytes returns a byte array of variable length representing the input big.Int in two's complement. Does not alter input.

func ToBytesOfLength ¶

func ToBytesOfLength(i *big.Int, bytesLength int) ([]byte, error)

ToBytesOfLength returns a byte array representation, 2's complement if number is negative. Big endian. Will return error if value does not fit in requested number of bytes.

Types ¶

This section is empty.

Source Files ¶

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