Struct hashers::jenkins::spooky_hash::SpookyHasher

pub struct SpookyHasher {
    pub m_data: [u8; 192],
    pub m_state: [Wrapping<u64>; 12],
    pub m_length: usize,
    pub m_remainder: usize,
}

From http://burtleburtle.net/bob/hash/spooky.html

SpookyHash is a public domain noncryptographic hash function producing well-distributed 128-bit hash values for byte arrays of any length. It can produce 64-bit and 32-bit hash values too, at the same speed, just use the bottom n bits. The C++ reference implementation is specific to 64-bit x86 platforms, in particular it assumes the processor is little endian. Long keys hash in 3 bytes per cycle, short keys take about 1 byte per cycle, and there is a 30 cycle startup cost. Keys can be supplied in fragments. The function allows a 128-bit seed. It's named SpookyHash because it was released on Halloween.

Fields

m_data: [u8; 192]

m_state: [Wrapping<u64>; 12]

m_length: usize

m_remainder: usize

Methods

impl SpookyHasher

pub fn new(seed1: u64, seed2: u64) -> SpookyHasher

pub fn finish128(&self) -> (u64, u64)

Trait Implementations

impl Default for SpookyHasher

fn default() -> SpookyHasher

Returns the "default value" for a type.

impl Hasher for SpookyHasher

fn finish(&self) -> u64

Returns the hash value for the values written so far.

fn write(&mut self, bytes: &[u8])

Writes some data into this Hasher.

fn write_u8(&mut self, i: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, i: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Writes a single u64 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 into this hasher.

fn write_usize(&mut self, i: usize)

Writes a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Writes a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Writes a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Writes a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Writes a single i64 into this hasher.

fn write_i128(&mut self, i: i128)

Writes a single i128 into this hasher.

fn write_isize(&mut self, i: isize)

Writes a single isize into this hasher.