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
|
//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <random>
// template<class RealType = double>
// class piecewise_linear_distribution
// template<class UnaryOperation>
// param_type(size_t nw, double xmin, double xmax,
// UnaryOperation fw);
#include <random>
#include <cassert>
double fw(double x)
{
return 2*x;
}
int main()
{
{
typedef std::piecewise_linear_distribution<> D;
typedef D::param_type P;
P pa(0, 0, 1, fw);
std::vector<double> iv = pa.intervals();
assert(iv.size() == 2);
assert(iv[0] == 0);
assert(iv[1] == 1);
std::vector<double> dn = pa.densities();
assert(dn.size() == 2);
assert(dn[0] == 0);
assert(dn[1] == 2);
}
{
typedef std::piecewise_linear_distribution<> D;
typedef D::param_type P;
P pa(1, 10, 12, fw);
std::vector<double> iv = pa.intervals();
assert(iv.size() == 2);
assert(iv[0] == 10);
assert(iv[1] == 12);
std::vector<double> dn = pa.densities();
assert(dn.size() == 2);
assert(dn[0] == 20./44);
assert(dn[1] == 24./44);
}
{
typedef std::piecewise_linear_distribution<> D;
typedef D::param_type P;
P pa(2, 6, 14, fw);
std::vector<double> iv = pa.intervals();
assert(iv.size() == 3);
assert(iv[0] == 6);
assert(iv[1] == 10);
assert(iv[2] == 14);
std::vector<double> dn = pa.densities();
assert(dn.size() == 3);
assert(dn[0] == 0.075);
assert(dn[1] == 0.125);
assert(dn[2] == 0.175);
}
}
|
