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 #include "test_macros.h" 32 33 template <class _Tp> 34 void where(const _Tp &) {} 35 36 void 37 test1() 38 { 39 typedef std::ranlux24_base E; 40 static_assert((E::word_size == 24), ""); 41 static_assert((E::short_lag == 10), ""); 42 static_assert((E::long_lag == 24), ""); 43 #if TEST_STD_VER >= 11 44 static_assert((E::min() == 0), ""); 45 static_assert((E::max() == 0xFFFFFF), ""); 46 #else 47 assert((E::min() == 0)); 48 assert((E::max() == 0xFFFFFF)); 49 #endif 50 static_assert((E::default_seed == 19780503u), ""); 51 where(E::word_size); 52 where(E::short_lag); 53 where(E::long_lag); 54 where(E::default_seed); 55 } 56 57 void 58 test2() 59 { 60 typedef std::ranlux48_base E; 61 static_assert((E::word_size == 48), ""); 62 static_assert((E::short_lag == 5), ""); 63 static_assert((E::long_lag == 12), ""); 64 #if TEST_STD_VER >= 11 65 static_assert((E::min() == 0), ""); 66 static_assert((E::max() == 0xFFFFFFFFFFFFull), ""); 67 #else 68 assert((E::min() == 0)); 69 assert((E::max() == 0xFFFFFFFFFFFFull)); 70 #endif 71 static_assert((E::default_seed == 19780503u), ""); 72 where(E::word_size); 73 where(E::short_lag); 74 where(E::long_lag); 75 where(E::default_seed); 76 } 77 78 int main() 79 { 80 test1(); 81 test2(); 82 } 83
