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, UIntType a, UIntType c, UIntType m> 13 // class linear_congruential_engine; 14 15 // void discard(unsigned long long z); 16 17 #include <random> 18 #include <cassert> 19 20 template <class T> 21 void 22 rand0() 23 { 24 typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E; 25 E e; 26 e.discard(9999); 27 assert(e() == 1043618065); 28 } 29 30 template <class T> 31 void 32 rand() 33 { 34 typedef std::linear_congruential_engine<T, 48271, 0, 2147483647> E; 35 E e; 36 e.discard(9999); 37 assert(e() == 399268537); 38 } 39 40 template <class T> 41 void 42 other() 43 { 44 typedef std::linear_congruential_engine<T, 48271, 123465789, 2147483647> E; 45 E e1; 46 E e2; 47 assert(e1 == e2); 48 e1.discard(1); 49 assert(e1 != e2); 50 e2(); 51 assert(e1 == e2); 52 e1.discard(3); 53 assert(e1 != e2); 54 e2(); 55 e2(); 56 e2(); 57 assert(e1 == e2); 58 } 59 60 int main() 61 { 62 rand0<unsigned int>(); 63 rand0<unsigned long>(); 64 rand0<unsigned long long>(); 65 66 rand<unsigned int>(); 67 rand<unsigned long>(); 68 rand<unsigned long long>(); 69 70 other<unsigned int>(); 71 other<unsigned long>(); 72 other<unsigned long long>(); 73 } 74
