bitutil

package

v0.0.0-...-07f142d Latest Latest Go to latest Published: Aug 3, 2018 License: Apache-2.0, BSD-2-Clause, BSD-3-Clause, + 2 more Imports: 3 Imported by: 0

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var (
	BitMask        = [8]byte{1, 2, 4, 8, 16, 32, 64, 128}
	FlippedBitMask = [8]byte{254, 253, 251, 247, 239, 223, 191, 127}
)

func BitIsNotSet(buf []byte, i int) bool

BitIsNotSet returns true if the bit at index i in buf is not set (0).

func BitIsSet(buf []byte, i int) bool

BitIsSet returns true if the bit at index i in buf is set (1).

func CeilByte(size int) int

CeilByte rounds size to the next multiple of 8.

func ClearBit(buf []byte, i int)

ClearBit sets the bit at index i in buf to 0.

func CountSetBits(buf []byte, n int) int

CountSetBits counts the number of 1's in buf up to n bits.

func NextPowerOf2(x int) int

NextPowerOf2 rounds x to the next power of two.

func SetBit(buf []byte, i int)

SetBit sets the bit at index i in buf to 1.

func SetBitTo(buf []byte, i int, val bool)

SetBitTo sets the bit at index i in buf to val.

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