1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <random>
10
11 // template<class RealType = double>
12 // class piecewise_constant_distribution
13
14 // explicit piecewise_constant_distribution(const param_type& parm);
15
16 #include <random>
17
18 #include <cassert>
19 #include <vector>
20
21 #include "test_macros.h"
22
main(int,char **)23 int main(int, char**)
24 {
25 {
26 typedef std::piecewise_constant_distribution<> D;
27 typedef D::param_type P;
28 double b[] = {10, 14, 16, 17};
29 double p[] = {25, 62.5, 12.5};
30 P pa(b, b+4, p);
31 D d(pa);
32 std::vector<double> iv = d.intervals();
33 assert(iv.size() == 4);
34 assert(iv[0] == 10);
35 assert(iv[1] == 14);
36 assert(iv[2] == 16);
37 assert(iv[3] == 17);
38 std::vector<double> dn = d.densities();
39 assert(dn.size() == 3);
40 assert(dn[0] == .0625);
41 assert(dn[1] == .3125);
42 assert(dn[2] == .125);
43 }
44
45 return 0;
46 }
47