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) (valid bool, shift int)
• func ValidPrefixCodedTermBytes(p []byte) (valid bool, shift int)
• type PrefixCoded
  • func MustNewPrefixCodedInt64(in int64, shift uint) PrefixCoded
  • func NewPrefixCodedInt64(in int64, shift uint) (PrefixCoded, error)
  • func NewPrefixCodedInt64Prealloc(in int64, shift uint, prealloc []byte) (rv PrefixCoded, preallocRest []byte, err 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 which was adapted from: http://graphics.stanford.edu/~seander/bithacks.html#InterleaveBMN

func ValidPrefixCodedTerm

func ValidPrefixCodedTerm(p string) (valid bool, shift int)

func ValidPrefixCodedTermBytes

func ValidPrefixCodedTermBytes(p []byte) (valid bool, shift 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 NewPrefixCodedInt64Prealloc

func NewPrefixCodedInt64Prealloc(in int64, shift uint, prealloc []byte) (
	rv PrefixCoded, preallocRest []byte, err 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