bits

Documentation

Overview

Package bits provides utils for manipulation bits of a single byte

Index

• func ConstructByteOfQuarters(first, second, third, fourth byte) byte
• func ConstructByteOfQuartersAsSlice(b []byte) byte
• func GetLastTwoBits(b byte) byte
• func QuartersOfByte(b byte) [4]byte
• func SetLastTwoBits(b byte, value byte) byte

Examples

• ConstructByteOfQuarters
• ConstructByteOfQuartersAsSlice
• GetLastTwoBits
• QuartersOfByte
• SetLastTwoBits

Functions

func ConstructByteOfQuarters

func ConstructByteOfQuarters(first, second, third, fourth byte) byte

ConstructByteOfQuarters constructs a byte of it's four quarters given

Example

fmt.Printf("%08b", ConstructByteOfQuarters(3, 2, 1, 3)) // 00000011 00000010 00000001 00000011 in binary

Output:

11100111

func ConstructByteOfQuartersAsSlice

func ConstructByteOfQuartersAsSlice(b []byte) byte

ConstructByteOfQuartersAsSlice constructs a byte of it's four quarters given as byte slice

Example

var quarters = []byte{3, 2, 1, 3} // 00000011 00000010 00000001 00000011 in binary
fmt.Printf("%08b", ConstructByteOfQuartersAsSlice(quarters))

Output:

11100111

func GetLastTwoBits

func GetLastTwoBits(b byte) byte

GetLastTwoBits returns byte containing only last two bits of given byte

Example

fmt.Printf("%08b", GetLastTwoBits(134)) // 134 is 10000110 in binary

Output:

00000010

func QuartersOfByte

func QuartersOfByte(b byte) [4]byte

QuartersOfByte returns a byte's four quarters of bits

Example

fmt.Printf("%08b", QuartersOfByte(231)) //231 is 11100111 in binary

Output:

[00000011 00000010 00000001 00000011]

func SetLastTwoBits

func SetLastTwoBits(b byte, value byte) byte

SetLastTwoBits modifies last two bits of given byte

Example

fmt.Printf("%08b", SetLastTwoBits(134, 1)) // 134 is 10000110 and 1 is 00000001 in binary

Output:

10000101