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 // result_type operator()();
16
17 #include <random>
18 #include <cassert>
19
20 template <class T>
21 void
randu()22 randu()
23 {
24 typedef std::linear_congruential_engine<T, 65539, 0, 2147483648u> E;
25 E e(1);
26 assert(e() == 65539);
27 assert(e() == 393225);
28 assert(e() == 1769499);
29 assert(e() == 7077969);
30 assert(e() == 26542323);
31 assert(e() == 95552217);
32 assert(e() == 334432395);
33 assert(e() == 1146624417);
34 assert(e() == 1722371299);
35 assert(e() == 14608041);
36 assert(e() == 1766175739);
37 assert(e() == 1875647473);
38 }
39
40 template <class T>
41 void
minstd()42 minstd()
43 {
44 typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E;
45 E e(1);
46 assert(e() == 16807);
47 assert(e() == 282475249);
48 assert(e() == 1622650073);
49 assert(e() == 984943658);
50 assert(e() == 1144108930);
51 assert(e() == 470211272);
52 assert(e() == 101027544);
53 assert(e() == 1457850878);
54 assert(e() == 1458777923);
55 assert(e() == 2007237709);
56 assert(e() == 823564440);
57 assert(e() == 1115438165);
58 }
59
60 template <class T>
61 void
Haldir()62 Haldir()
63 {
64 typedef std::linear_congruential_engine<T, 16807, 78125, 2147483647> E;
65 E e(207560540);
66 assert(e() == 956631177);
67 assert(e() == 2037688522);
68 assert(e() == 1509348670);
69 assert(e() == 1546336451);
70 assert(e() == 429714088);
71 assert(e() == 217250280);
72 }
73
main()74 int main()
75 {
76 randu<unsigned int>();
77 randu<unsigned long>();
78 randu<unsigned long long>();
79
80 minstd<unsigned int>();
81 minstd<unsigned long>();
82 minstd<unsigned long long>();
83
84 Haldir<unsigned int>();
85 Haldir<unsigned long>();
86 Haldir<unsigned long long>();
87 }
88