1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <random> 11 12 // template<class Engine, size_t p, size_t r> 13 // class discard_block_engine 14 // { 15 // public: 16 // // types 17 // typedef typename Engine::result_type result_type; 18 // 19 // // engine characteristics 20 // static constexpr size_t block_size = p; 21 // static constexpr size_t used_block = r; 22 // static constexpr result_type min() { return Engine::min(); } 23 // static constexpr result_type max() { return Engine::max(); } 24 25 #include <random> 26 #include <type_traits> 27 #include <cassert> 28 29 template <class _Tp> 30 void where(const _Tp &) {} 31 32 void 33 test1() 34 { 35 typedef std::ranlux24 E; 36 static_assert((E::block_size == 223), ""); 37 static_assert((E::used_block == 23), ""); 38 #if TEST_STD_VER >= 11 39 static_assert((E::min() == 0), ""); 40 static_assert((E::max() == 0xFFFFFF), ""); 41 #else 42 assert((E::min() == 0)); 43 assert((E::max() == 0xFFFFFF)); 44 #endif 45 where(E::block_size); 46 where(E::used_block); 47 } 48 49 void 50 test2() 51 { 52 typedef std::ranlux48 E; 53 static_assert((E::block_size == 389), ""); 54 static_assert((E::used_block == 11), ""); 55 #if TEST_STD_VER >= 11 56 static_assert((E::min() == 0), ""); 57 static_assert((E::max() == 0xFFFFFFFFFFFFull), ""); 58 #else 59 assert((E::min() == 0)); 60 assert((E::max() == 0xFFFFFFFFFFFFull)); 61 #endif 62 where(E::block_size); 63 where(E::used_block); 64 } 65 66 int main() 67 { 68 test1(); 69 test2(); 70 } 71
