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 test()21test() 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 main(int,char **)50int 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