1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <random> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// template<class Engine, size_t k> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class shuffle_order_engine 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// { 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// public: 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// // types 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// typedef typename Engine::result_type result_type; 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <random> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <type_traits> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 22a7b77ebd18eea99dc19123e7345e91893c887940Eric Fiselier#include "test_macros.h" 23a7b77ebd18eea99dc19123e7345e91893c887940Eric Fiselier 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class UIntType, UIntType Min, UIntType Max> 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantclass rand1 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant // types 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef UIntType result_type; 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantprivate: 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant result_type x_; 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert(Min < Max, "rand1 invalid parameters"); 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 37a7b77ebd18eea99dc19123e7345e91893c887940Eric Fiselier#if TEST_STD_VER < 11 && defined(_LIBCPP_VERSION) 388efd3dac5deb4581795bcded571a52b93a239613Howard Hinnant // Workaround for lack of constexpr in C++03 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static const result_type _Min = Min; 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static const result_type _Max = Max; 418efd3dac5deb4581795bcded571a52b93a239613Howard Hinnant#endif 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 43a7b77ebd18eea99dc19123e7345e91893c887940Eric Fiselier static TEST_CONSTEXPR result_type min() {return Min;} 44a7b77ebd18eea99dc19123e7345e91893c887940Eric Fiselier static TEST_CONSTEXPR result_type max() {return Max;} 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant explicit rand1(result_type sd = Min) : x_(sd) 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant if (x_ < Min) 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant x_ = Min; 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant if (x_ > Max) 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant x_ = Max; 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant result_type operator()() 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant result_type r = x_; 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant if (x_ < Max) 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant ++x_; 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant else 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant x_ = Min; 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant return r; 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest1() 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same< 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shuffle_order_engine<rand1<unsigned long, 0, 10>, 16>::result_type, 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned long>::value), ""); 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 74bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest2() 75bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant static_assert((std::is_same< 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shuffle_order_engine<rand1<unsigned long long, 0, 10>, 16>::result_type, 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned long long>::value), ""); 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test1(); 84bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test2(); 85bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 86