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 complex& 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 | const std::complex<T> c2(1.5, 2.5); |
25 | assert(c.real() == 0); |
26 | assert(c.imag() == 0); |
27 | c -= c2; |
28 | assert(c.real() == -1.5); |
29 | assert(c.imag() == -2.5); |
30 | c -= c2; |
31 | assert(c.real() == -3); |
32 | assert(c.imag() == -5); |
33 | |
34 | std::complex<T> c3; |
35 | |
36 | c3 = c; |
37 | std::complex<int> ic (1,1); |
38 | c3 -= ic; |
39 | assert(c3.real() == -4); |
40 | assert(c3.imag() == -6); |
41 | |
42 | c3 = c; |
43 | std::complex<float> fc (1,1); |
44 | c3 -= fc; |
45 | assert(c3.real() == -4); |
46 | assert(c3.imag() == -6); |
47 | return true; |
48 | } |
49 | |
50 | int main(int, char**) |
51 | { |
52 | test<float>(); |
53 | test<double>(); |
54 | test<long double>(); |
55 | |
56 | #if TEST_STD_VER >= 20 |
57 | static_assert(test<float>()); |
58 | static_assert(test<double>()); |
59 | static_assert(test<long double>()); |
60 | #endif |
61 | |
62 | return 0; |
63 | } |
64 |