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); // constexpr in C++20
14
15#include <complex>
16#include <cassert>
17
18#include "test_macros.h"
19
20template <class T>
21TEST_CONSTEXPR_CXX20
22bool
23test()
24{
25 assert(-std::complex<T>(1.5, -2.5) == std::complex<T>(-1.5, 2.5));
26 assert(-std::complex<T>(-1.5, 2.5) == std::complex<T>(1.5, -2.5));
27 return true;
28}
29
30int main(int, char**)
31{
32 test<float>();
33 test<double>();
34 test<long double>();
35
36#if TEST_STD_VER > 17
37 static_assert(test<float>());
38 static_assert(test<double>());
39 static_assert(test<long double>());
40#endif
41
42 return 0;
43}
44

source code of libcxx/test/std/numerics/complex.number/complex.ops/unary_minus.pass.cpp