| 26 | namespace ts |
| 27 | { |
| 28 | class Random |
| 29 | { |
| 30 | public: |
| 31 | Random() = delete; |
| 32 | |
| 33 | static uint64_t |
| 34 | random() |
| 35 | { |
| 36 | std::uniform_int_distribution<uint64_t> dist{0, UINT64_MAX}; |
| 37 | return dist(_engine); |
| 38 | } |
| 39 | |
| 40 | static double |
| 41 | drandom() |
| 42 | { |
| 43 | std::uniform_real_distribution<double> dist{0, 1}; |
| 44 | return dist(_engine); |
| 45 | } |
| 46 | |
| 47 | static void |
| 48 | seed(uint64_t s) |
| 49 | { |
| 50 | _engine.seed(s); |
| 51 | } |
| 52 | |
| 53 | private: |
| 54 | thread_local static std::mt19937_64 _engine; |
| 55 | }; |
| 56 | }; // namespace ts |