discard_block_engine Class

2013-02-24

通过丢弃其基本引擎返回的值生成一个随机顺序。

template<class Engine,
    int P, int R>
    class discard_block_engine {
public:
    typedef Engine base_type;
    typedef typename base_type::result_type result_type;
    static const int block_size = P;
    static const int used_block = R;
    discard_block_engine();
    explicit discard_block_engine(const base_type& eng);
    explicit discard_block_engine(result_type x0);
    explicit discard_block_engine(seed_seq& seq);
    void seed();
    void seed(result_type x0);
    void seed(seed_seq& seq);
    const base_type& base() const;
    static const result_type min();
    static const result_type max();
    result_type operator()();
    void discard(unsigned long long count);
private:
    Engine stored_eng;
    int count;
    };