1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <complex>
11 
12 // void real(T val);
13 // void imag(T val);
14 
15 #include <complex>
16 #include <cassert>
17 
18 template <class T>
19 void
test_constexpr()20 test_constexpr()
21 {
22 #if _LIBCPP_STD_VER > 11
23     constexpr std::complex<T> c1;
24     static_assert(c1.real() == 0, "");
25     static_assert(c1.imag() == 0, "");
26     constexpr std::complex<T> c2(3);
27     static_assert(c2.real() == 3, "");
28     static_assert(c2.imag() == 0, "");
29     constexpr std::complex<T> c3(3, 4);
30     static_assert(c3.real() == 3, "");
31     static_assert(c3.imag() == 4, "");
32 #endif
33 }
34 
35 template <class T>
36 void
test()37 test()
38 {
39     std::complex<T> c;
40     assert(c.real() == 0);
41     assert(c.imag() == 0);
42     c.real(3.5);
43     assert(c.real() == 3.5);
44     assert(c.imag() == 0);
45     c.imag(4.5);
46     assert(c.real() == 3.5);
47     assert(c.imag() == 4.5);
48     c.real(-4.5);
49     assert(c.real() == -4.5);
50     assert(c.imag() == 4.5);
51     c.imag(-5.5);
52     assert(c.real() == -4.5);
53     assert(c.imag() == -5.5);
54 
55     test_constexpr<T> ();
56 }
57 
main()58 int main()
59 {
60     test<float>();
61     test<double>();
62     test<long double>();
63     test_constexpr<int> ();
64 }
65