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 // <complex>
10 
11 // constexpr complex(const T& re = T(), const T& im = T());
12 
13 #include <complex>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 template <class T>
19 void
20 test()
21 {
22     {
23     const std::complex<T> c;
24     assert(c.real() == 0);
25     assert(c.imag() == 0);
26     }
27     {
28     const std::complex<T> c = 7.5;
29     assert(c.real() == 7.5);
30     assert(c.imag() == 0);
31     }
32     {
33     const std::complex<T> c(8.5);
34     assert(c.real() == 8.5);
35     assert(c.imag() == 0);
36     }
37     {
38     const std::complex<T> c(10.5, -9.5);
39     assert(c.real() == 10.5);
40     assert(c.imag() == -9.5);
41     }
42 #if TEST_STD_VER >= 11
43     {
44     constexpr std::complex<T> c;
45     static_assert(c.real() == 0, "");
46     static_assert(c.imag() == 0, "");
47     }
48     {
49     constexpr std::complex<T> c = 7.5;
50     static_assert(c.real() == 7.5, "");
51     static_assert(c.imag() == 0, "");
52     }
53     {
54     constexpr std::complex<T> c(8.5);
55     static_assert(c.real() == 8.5, "");
56     static_assert(c.imag() == 0, "");
57     }
58     {
59     constexpr std::complex<T> c(10.5, -9.5);
60     static_assert(c.real() == 10.5, "");
61     static_assert(c.imag() == -9.5, "");
62     }
63 #endif
64 }
65 
66 int main(int, char**)
67 {
68     test<float>();
69     test<double>();
70     test<long double>();
71 
72   return 0;
73 }
74