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 uniform_real_distribution
13
14 // explicit uniform_real_distribution(RealType a = 0.0,
15 // RealType b = 1.0); // before C++20
16 // uniform_real_distribution() : uniform_real_distribution(0.0) {} // C++20
17 // explicit uniform_real_distribution(RealType a, RealType b = 1.0); // C++20
18
19 #include <random>
20 #include <cassert>
21
22 #include "test_macros.h"
23 #if TEST_STD_VER >= 11
24 #include "make_implicit.h"
25 #include "test_convertible.h"
26 #endif
27
28 template <class T>
test_implicit()29 void test_implicit() {
30 #if TEST_STD_VER >= 11
31 typedef std::uniform_real_distribution<T> D;
32 static_assert(test_convertible<D>(), "");
33 assert(D(0) == make_implicit<D>());
34 static_assert(!test_convertible<D, T>(), "");
35 static_assert(!test_convertible<D, T, T>(), "");
36 #endif
37 }
38
main(int,char **)39 int main(int, char**)
40 {
41 {
42 typedef std::uniform_real_distribution<> D;
43 D d;
44 assert(d.a() == 0.0);
45 assert(d.b() == 1.0);
46 }
47 {
48 typedef std::uniform_real_distribution<> D;
49 D d(-6.5);
50 assert(d.a() == -6.5);
51 assert(d.b() == 1.0);
52 }
53 {
54 typedef std::uniform_real_distribution<> D;
55 D d(-6.9, 106.1);
56 assert(d.a() == -6.9);
57 assert(d.b() == 106.1);
58 }
59
60 test_implicit<float>();
61 test_implicit<double>();
62
63 return 0;
64 }
65