1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <random>
// template<class IntType = int>
// class discrete_distribution
// discrete_distribution(initializer_list<double> wl);
#include <random>
#include <cassert>
int main()
{
{
typedef std::discrete_distribution<> D;
D d = {};
std::vector<double> p = d.probabilities();
assert(p.size() == 1);
assert(p[0] == 1);
}
{
typedef std::discrete_distribution<> D;
D d = {10};
std::vector<double> p = d.probabilities();
assert(p.size() == 1);
assert(p[0] == 1);
}
{
typedef std::discrete_distribution<> D;
D d = {10, 30};
std::vector<double> p = d.probabilities();
assert(p.size() == 2);
assert(p[0] == 0.25);
assert(p[1] == 0.75);
}
{
typedef std::discrete_distribution<> D;
D d = {30, 10};
std::vector<double> p = d.probabilities();
assert(p.size() == 2);
assert(p[0] == 0.75);
assert(p[1] == 0.25);
}
{
typedef std::discrete_distribution<> D;
D d = {30, 0, 10};
std::vector<double> p = d.probabilities();
assert(p.size() == 3);
assert(p[0] == 0.75);
assert(p[1] == 0);
assert(p[2] == 0.25);
}
{
typedef std::discrete_distribution<> D;
D d = {0, 30, 10};
std::vector<double> p = d.probabilities();
assert(p.size() == 3);
assert(p[0] == 0);
assert(p[1] == 0.75);
assert(p[2] == 0.25);
}
{
typedef std::discrete_distribution<> D;
D d = {0, 0, 10};
std::vector<double> p = d.probabilities();
assert(p.size() == 3);
assert(p[0] == 0);
assert(p[1] == 0);
assert(p[2] == 1);
}
}
|
