zig/lib/std / hash.zig

This is handy if you have a u32 and want a u32 and don't want to take a detour through many layers of abstraction elsewhere in the std.hash namespace. Copied from https://nullprogram.com/blog/2018/07/31/

 
const adler = @import("hash/adler.zig");

Adler32

 
pub const Adler32 = adler.Adler32;

autoHash

 

const auto_hash = @import("hash/auto_hash.zig");
pub const autoHash = auto_hash.autoHash;

autoHashStrat

 
pub const autoHashStrat = auto_hash.hash;

Strategy

 
pub const Strategy = auto_hash.HashStrategy;

crc

hash/crc.zig 

// pub for polynomials + generic crc32 construction
pub const crc = @import("hash/crc.zig");

Crc32

 
pub const Crc32 = crc.Crc32;

Fnv1a_32

 

const fnv = @import("hash/fnv.zig");
pub const Fnv1a_32 = fnv.Fnv1a_32;

Fnv1a_64

 
pub const Fnv1a_64 = fnv.Fnv1a_64;

Fnv1a_128

 
pub const Fnv1a_128 = fnv.Fnv1a_128;

SipHash64

 

const siphash = @import("crypto/siphash.zig");
pub const SipHash64 = siphash.SipHash64;

SipHash128

 
pub const SipHash128 = siphash.SipHash128;

murmur

hash/murmur.zig 

pub const murmur = @import("hash/murmur.zig");

Murmur2_32

 
pub const Murmur2_32 = murmur.Murmur2_32;

Murmur2_64

 

pub const Murmur2_64 = murmur.Murmur2_64;

Murmur3_32

 
pub const Murmur3_32 = murmur.Murmur3_32;

cityhash

hash/cityhash.zig 

pub const cityhash = @import("hash/cityhash.zig");

CityHash32

 
pub const CityHash32 = cityhash.CityHash32;

CityHash64

 
pub const CityHash64 = cityhash.CityHash64;

Wyhash

 

const wyhash = @import("hash/wyhash.zig");
pub const Wyhash = wyhash.Wyhash;

XxHash3

 

const xxhash = @import("hash/xxhash.zig");
pub const XxHash3 = xxhash.XxHash3;

XxHash64

 
pub const XxHash64 = xxhash.XxHash64;

XxHash32

 
pub const XxHash32 = xxhash.XxHash32;

uint32()

 

/// This is handy if you have a u32 and want a u32 and don't want to take a
/// detour through many layers of abstraction elsewhere in the std.hash
/// namespace.
/// Copied from https://nullprogram.com/blog/2018/07/31/
pub fn uint32(input: u32) u32 {
    var x: u32 = input;
    x ^= x >> 16;
    x *%= 0x7feb352d;
    x ^= x >> 15;
    x *%= 0x846ca68b;
    x ^= x >> 16;
    return x;
}

test {
    _ = adler;
    _ = auto_hash;
    _ = crc;
    _ = fnv;
    _ = murmur;
    _ = cityhash;
    _ = wyhash;
    _ = xxhash;
}