module hash

//#flag -I @VEXEROOT/thirdparty/wyhash
//#include "wyhash.h"
fn C.wyhash(&u8, u64, u64, &u64) u64

fn C.wyhash64(u64, u64) u64

// wyhash_c returns a hash given a byte string `key`, its `len`, and a `seed`.
@[inline]
pub fn wyhash_c(key &u8, len u64, seed u64) u64 {
    return C.wyhash(key, len, seed, &u64(voidptr(C._wyp)))
}

// wyhash64_c returns a hash given two u64 values `a` and `b`.
@[inline]
pub fn wyhash64_c(a u64, b u64) u64 {
    return C.wyhash64(a, b)
}

// sum64_string returns a hash given a V string `key` and a `seed`.
@[inline]
pub fn sum64_string(key string, seed u64) u64 {
    return wyhash_c(key.str, u64(key.len), seed)
}

// sum64 returns a hash given a byte array `key` and a `seed`.
@[inline]
pub fn sum64(key []u8, seed u64) u64 {
    return wyhash_c(key.data, u64(key.len), seed)
}