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 UIntType, size_t w, size_t s, size_t r> 13 // class subtract_with_carry_engine 14 // { 15 // public: 16 // // types 17 // typedef UIntType result_type; 18 // 19 // // engine characteristics 20 // static constexpr size_t word_size = w; 21 // static constexpr size_t short_lag = s; 22 // static constexpr size_t long_lag = r; 23 // static constexpr result_type min() { return 0; } 24 // static constexpr result_type max() { return m-1; } 25 // static constexpr result_type default_seed = 19780503u; 26 27 #include <random> 28 #include <type_traits> 29 #include <cassert> 30 31 template <class _Tp> 32 void where(const _Tp &) {} 33 34 void 35 test1() 36 { 37 typedef std::ranlux24_base E; 38 static_assert((E::word_size == 24), ""); 39 static_assert((E::short_lag == 10), ""); 40 static_assert((E::long_lag == 24), ""); 41 #if TEST_STD_VER >= 11 42 static_assert((E::min() == 0), ""); 43 static_assert((E::max() == 0xFFFFFF), ""); 44 #else 45 assert((E::min() == 0)); 46 assert((E::max() == 0xFFFFFF)); 47 #endif 48 static_assert((E::default_seed == 19780503u), ""); 49 where(E::word_size); 50 where(E::short_lag); 51 where(E::long_lag); 52 where(E::default_seed); 53 } 54 55 void 56 test2() 57 { 58 typedef std::ranlux48_base E; 59 static_assert((E::word_size == 48), ""); 60 static_assert((E::short_lag == 5), ""); 61 static_assert((E::long_lag == 12), ""); 62 #if TEST_STD_VER >= 11 63 static_assert((E::min() == 0), ""); 64 static_assert((E::max() == 0xFFFFFFFFFFFFull), ""); 65 #else 66 assert((E::min() == 0)); 67 assert((E::max() == 0xFFFFFFFFFFFFull)); 68 #endif 69 static_assert((E::default_seed == 19780503u), ""); 70 where(E::word_size); 71 where(E::short_lag); 72 where(E::long_lag); 73 where(E::default_seed); 74 } 75 76 int main() 77 { 78 test1(); 79 test2(); 80 } 81