hash.h

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#pragma once
 
#include <string_view>
 
#include "base/ints.h"
 
namespace eu::core
{
    // implements fnv-1a: https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function
 
    constexpr U64 hash64(const std::string_view str, U64 hash = 0xcbf29ce484222325)
    {
        return str.empty() ? hash : hash64(str.substr(1), (hash ^ str[0]) * 0x100000001b3);
    }
}