libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_complex.pass.cpp

   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&);
  12 // template<class X> complex& operator= (const complex<X>&); // constexpr in C++20
  13
  14 #include <complex>
  15 #include <cassert>
  16
  17 #include "test_macros.h"
  18
  19 template <class T, class X>
  20 TEST_CONSTEXPR_CXX20
  21 bool
  22 test()
  23 {
  24     std::complex<T> c;
  25     assert(c.real() == 0);
  26     assert(c.imag() == 0);
  27     std::complex<T> c2(1.5, 2.5);
  28     c = c2;
  29     assert(c.real() == 1.5);
  30     assert(c.imag() == 2.5);
  31     std::complex<X> c3(3.5, -4.5);
  32     c = c3;
  33     assert(c.real() == 3.5);
  34     assert(c.imag() == -4.5);
  35     return true;
  36 }
  37
  38 int main(int, char**)
  39 {
  40     test<float, float>();
  41     test<float, double>();
  42     test<float, long double>();
  43
  44     test<double, float>();
  45     test<double, double>();
  46     test<double, long double>();
  47
  48     test<long double, float>();
  49     test<long double, double>();
  50     test<long double, long double>();
  51
  52 #if TEST_STD_VER >= 20
  53     static_assert(test<float, float>());
  54     static_assert(test<float, double>());
  55     static_assert(test<float, long double>());
  56
  57     static_assert(test<double, float>());
  58     static_assert(test<double, double>());
  59     static_assert(test<double, long double>());
  60
  61     static_assert(test<long double, float>());
  62     static_assert(test<long double, double>());
  63     static_assert(test<long double, long double>());
  64 #endif
  65
  66   return 0;
  67 }