libcxx/test/std/numerics/complex.number/complex.ops/scalar_equals_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 // template<class T>
  12 //   bool
  13 //   operator==(const T& lhs, const complex<T>& rhs);
  14
  15 #include <complex>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 template <class T>
  21 TEST_CONSTEXPR_CXX20
  22 void
  23 test_constexpr()
  24 {
  25 #if TEST_STD_VER > 11
  26     {
  27     constexpr T lhs(-2.5);
  28     constexpr std::complex<T> rhs(1.5,  2.5);
  29     static_assert(!(lhs == rhs), "");
  30     }
  31     {
  32     constexpr T lhs(-2.5);
  33     constexpr std::complex<T> rhs(1.5,  0);
  34     static_assert(!(lhs == rhs), "");
  35     }
  36     {
  37     constexpr T lhs(1.5);
  38     constexpr std::complex<T> rhs(1.5, 2.5);
  39     static_assert(!(lhs == rhs), "");
  40     }
  41     {
  42     constexpr T lhs(1.5);
  43     constexpr std::complex<T> rhs(1.5, 0);
  44     static_assert(lhs == rhs, "");
  45     }
  46 #endif
  47 }
  48
  49 template <class T>
  50 TEST_CONSTEXPR_CXX20
  51 bool
  52 test()
  53 {
  54     {
  55     T lhs(-2.5);
  56     std::complex<T> rhs(1.5,  2.5);
  57     assert(!(lhs == rhs));
  58     }
  59     {
  60     T lhs(-2.5);
  61     std::complex<T> rhs(1.5,  0);
  62     assert(!(lhs == rhs));
  63     }
  64     {
  65     T lhs(1.5);
  66     std::complex<T> rhs(1.5, 2.5);
  67     assert(!(lhs == rhs));
  68     }
  69     {
  70     T lhs(1.5);
  71     std::complex<T> rhs(1.5, 0);
  72     assert(lhs == rhs);
  73     }
  74
  75     test_constexpr<T> ();
  76     return true;
  77 }
  78
  79 int main(int, char**)
  80 {
  81     test<float>();
  82     test<double>();
  83     test<long double>();
  84
  85 #if TEST_STD_VER > 17
  86     static_assert(test<float>());
  87     static_assert(test<double>());
  88     static_assert(test<long double>());
  89 #endif
  90
  91   return 0;
  92 }