| 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 | // complex& operator-=(const T& rhs); // constexpr in C++20 |
| 12 | |
| 13 | #include <complex> |
| 14 | #include <cassert> |
| 15 | |
| 16 | #include "test_macros.h" |
| 17 | |
| 18 | template <class T> |
| 19 | TEST_CONSTEXPR_CXX20 |
| 20 | bool |
| 21 | test() |
| 22 | { |
| 23 | std::complex<T> c; |
| 24 | assert(c.real() == 0); |
| 25 | assert(c.imag() == 0); |
| 26 | c -= 1.5; |
| 27 | assert(c.real() == -1.5); |
| 28 | assert(c.imag() == 0); |
| 29 | c -= 1.5; |
| 30 | assert(c.real() == -3); |
| 31 | assert(c.imag() == 0); |
| 32 | c -= -1.5; |
| 33 | assert(c.real() == -1.5); |
| 34 | assert(c.imag() == 0); |
| 35 | return true; |
| 36 | } |
| 37 | |
| 38 | int main(int, char**) |
| 39 | { |
| 40 | test<float>(); |
| 41 | test<double>(); |
| 42 | test<long double>(); |
| 43 | |
| 44 | #if TEST_STD_VER >= 20 |
| 45 | static_assert(test<float>()); |
| 46 | static_assert(test<double>()); |
| 47 | static_assert(test<long double>()); |
| 48 | #endif |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 |