bytes

Documentation

Index

• func AllZero(b []byte) bool
• func AllZeroSIMD(b []byte) bool
• func LongestZeroSpan(b []byte) (start, length int)
• func SIMDLongestZeroSpan(b []byte) (start, length int)

Functions

func AllZero

func AllZero(b []byte) bool

AllZero reports whether b consists entirely of zero bytes. This simple version is on-par with the assembly, so typically we prefer it for portability.

func AllZeroSIMD

func AllZeroSIMD(b []byte) bool

AllZeroSIMD reports whether b consists entirely of zero bytes. It uses assembly, which may or may not be faster.

func LongestZeroSpan

func LongestZeroSpan(b []byte) (start, length int)

LongestZeroSpan is a simple byte-by-byte implementation for benchmarking. This naive version is on par with the SIMD version above. To see on your machine, run: go test -bench=. -benchmem

func SIMDLongestZeroSpan

func SIMDLongestZeroSpan(b []byte) (start, length int)

LongestZeroSpan returns the start index and length of the longest continuous span of zero bytes in the given slice. If no zeros are found, returns (0, 0). If multiple spans of the same longest length exist, returns the first one.