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 T>
where(const T &)34 void where(const T &) {}
35
36 void
test1()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
test2()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
main()78 int main()
79 {
80 test1();
81 test2();
82 }
83