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 // template<class T>
12 // complex<T>
13 // operator-(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
14
15 #include <complex>
16 #include <cassert>
17
18 #include "test_macros.h"
19
20 template <class T>
21 TEST_CONSTEXPR_CXX20
22 bool
test()23 test()
24 {
25 {
26 const std::complex<T> lhs(1.5, 2.5);
27 const std::complex<T> rhs(3.5, 4.5);
28 assert(lhs - rhs == std::complex<T>(-2.0, -2.0));
29 }
30 {
31 const std::complex<T> lhs(1.5, -2.5);
32 const std::complex<T> rhs(-3.5, 4.5);
33 assert(lhs - rhs == std::complex<T>(5.0, -7.0));
34 }
35 return true;
36 }
37
main(int,char **)38 int main(int, char**)
39 {
40 test<float>();
41 test<double>();
42 test<long double>();
43
44 #if TEST_STD_VER > 17
45 static_assert(test<float>());
46 static_assert(test<double>());
47 static_assert(test<long double>());
48 #endif
49
50 return 0;
51 }
52