Struct streamvbyte64::Coder1248

pub struct Coder1248(_);

Coder1248 packs 64-bit integers into lengths of 1, 2, 4, or 8 bytes.

This implementation has acceleration support on little-endian aarch64 targets using NEON instructions.

Trait Implementations

impl Clone for Coder1248

fn clone(&self) -> Coder1248

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Coder for Coder1248

type Elem = u64

The input/output element type for this coder, typically u32 or u64.

fn new() -> Self

Create a new Coder, selecting the fastest implementation available.

fn encode(&self, values: &[u64], tags: &mut [u8], encoded: &mut [u8]) -> usize

Encodes a slice of values, writing tags and data to separate streams.

fn encode_deltas( &self, initial: u64, values: &[u64], tags: &mut [u8], encoded: &mut [u8] ) -> usize

Encodes a slice of values, writing tags and data to separate streams.

fn decode(&self, tags: &[u8], encoded: &[u8], values: &mut [u64]) -> usize

Decodes input tags and data streams to an output slice.

fn decode_deltas( &self, initial: u64, tags: &[u8], encoded: &[u8], values: &mut [u64] ) -> usize

Decodes input tags and data streams to an output slice.

fn data_len(&self, tags: &[u8]) -> usize

Returns the data length of all the groups encoded by tags.

fn skip_deltas(&self, tags: &[u8], encoded: &[u8]) -> (usize, u64)

Skip tags.len() * 4 deltas read from input tag and data streams.

fn max_compressed_bytes(len: usize) -> (usize, usize)

Returns the number of (tag_bytes, data_bytes) required to compress a slice of length len.

impl Copy for Coder1248