numeric

Documentation

Index

• Constants
• func Deinterleave(b uint64) uint64
• func Float64ToInt64(f float64) int64
• func Int64ToFloat64(i int64) float64
• func Interleave(v1, v2 uint64) uint64
• func ValidPrefixCodedTerm(p string) (bool, int)
• type PrefixCoded
  • func MustNewPrefixCodedInt64(in int64, shift uint) PrefixCoded
  • func NewPrefixCodedInt64(in int64, shift uint) (PrefixCoded, error)
  • func (p PrefixCoded) Int64() (int64, error)
  • func (p PrefixCoded) Shift() (uint, error)

Constants

const ShiftStartInt64 byte = 0x20

Functions

func Deinterleave

func Deinterleave(b uint64) uint64

Deinterleave the 32-bit value starting at position 0 to get the other 32-bit value, shift it by 1 first

func Float64ToInt64

func Float64ToInt64(f float64) int64

func Int64ToFloat64

func Int64ToFloat64(i int64) float64

func Interleave

func Interleave(v1, v2 uint64) uint64

Interleave the first 32 bits of each uint64 apdated from org.apache.lucene.util.BitUtil whcih was adapted from: http://graphics.stanford.edu/~seander/bithacks.html#InterleaveBMN

func ValidPrefixCodedTerm

func ValidPrefixCodedTerm(p string) (bool, int)

Types

type PrefixCoded

type PrefixCoded []byte

PrefixCoded is a byte array encoding of 64-bit numeric values shifted by 0-63 bits

func MustNewPrefixCodedInt64

func MustNewPrefixCodedInt64(in int64, shift uint) PrefixCoded

func NewPrefixCodedInt64

func NewPrefixCodedInt64(in int64, shift uint) (PrefixCoded, error)

func (PrefixCoded) Int64

func (p PrefixCoded) Int64() (int64, error)

func (PrefixCoded) Shift

func (p PrefixCoded) Shift() (uint, error)

Shift returns the number of bits shifted returns 0 if in uninitialized state