Class FastRnd

modules/core/task/src/task2.cpp:25–36

https://en.wikipedia.org/wiki/Xorshift

// https://en.wikipedia.org/wiki/Xorshift
class FastRnd {
    public:
    inline uint64_t operator()() {
    x ^= x << 13;
    x ^= x >> 7;
    x ^= x << 17;
    return x;
    }

    private:
    uint64_t x = std::chrono::system_clock::now().time_since_epoch().count();
};

namespace skr
{