libcxx/test/std/numerics/complex.number/complex.ops/scalar_minus_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 //   complex<T>
  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 void
  22 test(const T& lhs, const std::complex<T>& rhs, std::complex<T> x)
  23 {
  24     assert(lhs - rhs == x);
  25 }
  26
  27 template <class T>
  28 void
  29 test()
  30 {
  31     {
  32     T lhs(1.5);
  33     std::complex<T> rhs(3.5, 4.5);
  34     std::complex<T>   x(-2.0, -4.5);
  35     test(lhs, rhs, x);
  36     }
  37     {
  38     T lhs(1.5);
  39     std::complex<T> rhs(-3.5, 4.5);
  40     std::complex<T>   x(5.0, -4.5);
  41     test(lhs, rhs, x);
  42     }
  43 }
  44
  45 int main(int, char**)
  46 {
  47     test<float>();
  48     test<double>();
  49     test<long double>();
  50
  51   return 0;
  52 }